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7,800 | NDQ_002313 | the sun | Solar flares occur when | null | null | Multiple Choice | a. there is a break in a loop of the suns magnetic field., b. solar wind causes fires to flare up on the suns surface., c. nuclear reactions take place in the suns atmosphere., d. matter inside the sun changes to the plasma state. | a |
7,801 | NDQ_002314 | the sun | The hottest part of the sun is the | null | null | Multiple Choice | a. convection zone., b. radiative zone., c. corona., d. core. | d |
7,802 | NDQ_002315 | the sun | Power grids and communication systems on Earth may be disturbed by a | null | null | Multiple Choice | a. sunspot., b. solar flare., c. solar corona., d. solar fusion reaction. | b |
7,803 | NDQ_002316 | the sun | relatively cool, dark area on the suns surface | null | null | Multiple Choice | a. chromosphere, b. corona, c. photosphere, d. plasma, e. convection zone, f. radiative zone, g. sunspot | g |
7,804 | NDQ_002317 | the sun | superheated gas with an electrical charge | null | null | Multiple Choice | a. chromosphere, b. corona, c. photosphere, d. plasma, e. convection zone, f. radiative zone, g. sunspot | d |
7,805 | NDQ_002318 | the sun | layer of the sun that surrounds the radiative zone | null | null | Multiple Choice | a. chromosphere, b. corona, c. photosphere, d. plasma, e. convection zone, f. radiative zone, g. sunspot | e |
7,806 | NDQ_002319 | the sun | visible layer of the suns atmosphere | null | null | Multiple Choice | a. chromosphere, b. corona, c. photosphere, d. plasma, e. convection zone, f. radiative zone, g. sunspot | c |
7,807 | NDQ_002320 | the sun | layer of the suns atmosphere that glows red | null | null | Multiple Choice | a. chromosphere, b. corona, c. photosphere, d. plasma, e. convection zone, f. radiative zone, g. sunspot | a |
7,808 | NDQ_002321 | the sun | layer of the sun nearest the core | null | null | Multiple Choice | a. chromosphere, b. corona, c. photosphere, d. plasma, e. convection zone, f. radiative zone, g. sunspot | f |
7,809 | NDQ_002322 | the sun | hottest layer of the suns atmosphere | null | null | Multiple Choice | a. chromosphere, b. corona, c. photosphere, d. plasma, e. convection zone, f. radiative zone, g. sunspot | b |
7,810 | NDQ_002323 | the sun and the earthmoon system | phase of the moon in which half of the side facing Earth is lit | null | null | Multiple Choice | a. full moon, b. quarter moon, c. lunar eclipse, d. umbra, e. solar eclipse, f. penumbra, g. new moon | b |
7,811 | NDQ_002324 | the sun and the earthmoon system | What are the two distinct parts of Earths shadow during a solar eclipse? | null | null | Multiple Choice | a. light and dark, b. panera and umbrella, c. umbra and penumbra, d. inner and outer | c |
7,812 | NDQ_002325 | the sun and the earthmoon system | phase of the moon in which the entire side facing Earth is dark | null | null | Multiple Choice | a. full moon, b. quarter moon, c. lunar eclipse, d. umbra, e. solar eclipse, f. penumbra, g. new moon | g |
7,813 | NDQ_002326 | the sun and the earthmoon system | If the Moon is more than half lit, but the left side is dark, the phase is | null | null | Multiple Choice | a. first quarter, b. waxing gibbous, c. waning gibbous, d. last quarter | b |
7,814 | NDQ_002327 | the sun and the earthmoon system | event in which Earth casts a shadow on the moon | null | null | Multiple Choice | a. full moon, b. quarter moon, c. lunar eclipse, d. umbra, e. solar eclipse, f. penumbra, g. new moon | c |
7,815 | NDQ_002328 | the sun and the earthmoon system | When the full moon moves through Earths shadow, what occurs? | null | null | Multiple Choice | a. solar eclipse, b. high tide, c. low tide, d. lunar eclipse | a |
7,816 | NDQ_002329 | the sun and the earthmoon system | A quarter moon is | null | null | Multiple Choice | a. halfway between a full moon and a new moon, b. two weeks after a full moon, c. when one quarter of the moon you see is lit, d. when one quarter of the moon you see is dark | a |
7,817 | NDQ_002330 | the sun and the earthmoon system | inner part of the moons shadow during an eclipse | null | null | Multiple Choice | a. full moon, b. quarter moon, c. lunar eclipse, d. umbra, e. solar eclipse, f. penumbra, g. new moon | d |
7,818 | NDQ_002331 | the sun and the earthmoon system | event in which the moon casts a shadow on Earth | null | null | Multiple Choice | a. full moon, b. quarter moon, c. lunar eclipse, d. umbra, e. solar eclipse, f. penumbra, g. new moon | e |
7,819 | NDQ_002332 | the sun and the earthmoon system | What is the moon called when it is more than half lit? | null | null | Multiple Choice | a. a harvest moon, b. a blue moon, c. a crescent moon, d. a gibbous moon | d |
7,820 | NDQ_002334 | the sun and the earthmoon system | outer part of the moons shadow during an eclipse | null | null | Multiple Choice | a. full moon, b. quarter moon, c. lunar eclipse, d. umbra, e. solar eclipse, f. penumbra, g. new moon | f |
7,821 | NDQ_002335 | the sun and the earthmoon system | phase of the moon in which the entire side facing Earth is lit | null | null | Multiple Choice | a. full moon, b. quarter moon, c. lunar eclipse, d. umbra, e. solar eclipse, f. penumbra, g. new moon | a |
7,822 | NDQ_002343 | the sun and the earthmoon system | A lunar eclipse generally lasts between 5-10 minutes. | null | null | Multiple Choice | a. true, b. false | b |
7,823 | NDQ_002345 | the sun and the earthmoon system | Birds may become confused during a solar eclipse and think that it is nighttime. | null | null | Multiple Choice | a. true, b. false | a |
7,824 | NDQ_002348 | the sun and the earthmoon system | During a total lunar eclipse the moon is entirely dark. | null | null | Multiple Choice | a. true, b. false | b |
7,825 | NDQ_002350 | the sun and the earthmoon system | A solar eclipse is seen on all of the Earth that is having daytime. | null | null | Multiple Choice | a. true, b. false | b |
7,826 | NDQ_002351 | the sun and the earthmoon system | The time between two full moon phases is 29.5 days. | null | null | Multiple Choice | a. true, b. false | a |
7,827 | NDQ_002352 | the sun and the earthmoon system | The cone-shaped part of the moons shadow is the penumbra. | null | null | Multiple Choice | a. true, b. false | b |
7,828 | NDQ_002353 | the sun and the earthmoon system | Light is only partly blocked in the umbra part of a shadow. | null | null | Multiple Choice | a. true, b. false | b |
7,829 | NDQ_002354 | the sun and the earthmoon system | Solar eclipses are rare events. | null | null | Multiple Choice | a. true, b. false | a |
7,830 | NDQ_002355 | the sun and the earthmoon system | During a partial lunar eclipse, only part of the moon enters Earths umbra. | null | null | Multiple Choice | a. true, b. false | a |
7,831 | NDQ_002356 | the sun and the earthmoon system | A total lunar eclipse occurs once every month. | null | null | Multiple Choice | a. true, b. false | b |
7,832 | NDQ_002357 | the sun and the earthmoon system | The full moon phase occurs when the moon is on the opposite side of Earth from the sun. | null | null | Multiple Choice | a. true, b. false | a |
7,833 | NDQ_002358 | the sun and the earthmoon system | A crescent phase follows the first quarter phase of the moon. | null | null | Multiple Choice | a. true, b. false | b |
7,834 | NDQ_002359 | the sun and the earthmoon system | If the new moon occurs on the 1st of the month, the full moon will occur on the 28th of the month. | null | null | Multiple Choice | a. true, b. false | b |
7,835 | NDQ_002360 | the sun and the earthmoon system | When a lunar eclipse occurs, the sun cannot be seen from Earth. | null | null | Multiple Choice | a. true, b. false | b |
7,836 | NDQ_002361 | the sun and the earthmoon system | When a solar eclipse occurs, the moon cannot be seen from Earth. | null | null | Multiple Choice | a. true, b. false | b |
7,837 | NDQ_002362 | the sun and the earthmoon system | Interactions between the sun, moon, and Earth include | null | null | Multiple Choice | a. lunar and solar eclipses., b. phases of the moon., c. Earths tides., d. all of the above | d |
7,838 | NDQ_002363 | the sun and the earthmoon system | The ecliptic is the | null | null | Multiple Choice | a. plane in which Earth orbits the sun., b. distance between the moon and Earth., c. period during which an eclipse occurs., d. difference in size between the umbra and penumbra. | a |
7,839 | NDQ_002364 | the sun and the earthmoon system | A total solar eclipse occurs when | null | null | Multiple Choice | a. Earths umbra falls on the moon., b. Earths shadow completely blocks the moon., c. the moons shadow completely blocks the sun., d. none of the above | c |
7,840 | NDQ_002365 | the sun and the earthmoon system | A solar eclipse usually lasts for | null | null | Multiple Choice | a. a few minutes., b. at least an hour., c. a few hours., d. a day or more. | a |
7,841 | NDQ_002366 | the sun and the earthmoon system | The moon passes through all of its phases about once every | null | null | Multiple Choice | a. week., b. 2 weeks., c. month., d. 2 months. | c |
7,842 | NDQ_002367 | the sun and the earthmoon system | How much time goes by between the new moon and first quarter moon phases? | null | null | Multiple Choice | a. 1 week, b. 2 weeks, c. 3 weeks, d. 4 weeks | a |
7,843 | NDQ_002368 | the sun and the earthmoon system | Which phase of the moon occurs next after the full moon phase? | null | null | Multiple Choice | a. third quarter moon, b. crescent moon, c. gibbous moon, d. new moon | c |
7,844 | NDQ_002369 | introduction to the solar system | collection of many small objects beyond the orbit of Neptune | null | null | Multiple Choice | a. astronomical unit, b. Kuiper belt, c. nebula, d. dwarf planet, e. solar system, f. asteroid belt, g. exoplanet | b |
7,845 | NDQ_002370 | introduction to the solar system | The planets appear to move | null | null | Multiple Choice | a. in the same direction as the stars, b. some with and some opposite the stars, c. in a circular motion, d. sometimes with and sometimes opposite the stars | d |
7,846 | NDQ_002371 | introduction to the solar system | distance from Earth to the sun | null | null | Multiple Choice | a. astronomical unit, b. Kuiper belt, c. nebula, d. dwarf planet, e. solar system, f. asteroid belt, g. exoplanet | a |
7,847 | NDQ_002372 | introduction to the solar system | The model that put the Sun at the center of the universe was proposed by | null | null | Multiple Choice | a. Aristotle, b. Galileo, c. Copernicus, d. Ptolemy | c |
7,848 | NDQ_002373 | introduction to the solar system | star and the planets that orbit it | null | null | Multiple Choice | a. astronomical unit, b. Kuiper belt, c. nebula, d. dwarf planet, e. solar system, f. asteroid belt, g. exoplanet | e |
7,849 | NDQ_002374 | introduction to the solar system | Extrasolar planets are found by | null | null | Multiple Choice | a. the wobble of a star on its axis, b. the periodic dimming in of a star, c. being visible through a telescope, d. the excess gravity of a star | b |
7,850 | NDQ_002375 | introduction to the solar system | All of the planets in the solar system | null | null | Multiple Choice | a. lie in the same plane, b. are made mostly of rocks and metals, c. rotate in the same direction, d. all of these | a |
7,851 | NDQ_002376 | introduction to the solar system | collection of many small objects between the orbits of Mars and Jupiter | null | null | Multiple Choice | a. astronomical unit, b. Kuiper belt, c. nebula, d. dwarf planet, e. solar system, f. asteroid belt, g. exoplanet | f |
7,852 | NDQ_002377 | introduction to the solar system | planet that orbits a star other than the sun | null | null | Multiple Choice | a. astronomical unit, b. Kuiper belt, c. nebula, d. dwarf planet, e. solar system, f. asteroid belt, g. exoplanet | g |
7,853 | NDQ_002378 | introduction to the solar system | The force of gravity between objects depends on their mass and __________ | null | null | Multiple Choice | a. acceleration, b. distance apart, c. gravitational potential energy, d. density | b |
7,854 | NDQ_002380 | introduction to the solar system | planet such as Pluto | null | null | Multiple Choice | a. astronomical unit, b. Kuiper belt, c. nebula, d. dwarf planet, e. solar system, f. asteroid belt, g. exoplanet | d |
7,855 | NDQ_002381 | introduction to the solar system | giant cloud of gas and dust | null | null | Multiple Choice | a. astronomical unit, b. Kuiper belt, c. nebula, d. dwarf planet, e. solar system, f. asteroid belt, g. exoplanet | c |
7,856 | NDQ_002389 | introduction to the solar system | If you know a planets orbit you can determine its approximate distance from the Sun. | null | null | Multiple Choice | a. true, b. false | a |
7,857 | NDQ_002391 | introduction to the solar system | The planets in order from the Sun are Mars, Venus, Earth, Mercury, Saturn, Uranus, Jupiter and Neptune. | null | null | Multiple Choice | a. true, b. false | b |
7,858 | NDQ_002394 | introduction to the solar system | The orbits of the planets are circular. | null | null | Multiple Choice | a. true, b. false | b |
7,859 | NDQ_002396 | introduction to the solar system | One astronomical unit is the distance from Earth to Sun. | null | null | Multiple Choice | a. true, b. false | a |
7,860 | NDQ_002397 | introduction to the solar system | All of the planets in the solar system rotate in the same direction. | null | null | Multiple Choice | a. true, b. false | b |
7,861 | NDQ_002398 | introduction to the solar system | The planets in our solar system were named for Greek gods and goddesses. | null | null | Multiple Choice | a. true, b. false | a |
7,862 | NDQ_002399 | introduction to the solar system | We now know that the sun is the center of the universe. | null | null | Multiple Choice | a. true, b. false | b |
7,863 | NDQ_002400 | introduction to the solar system | Scientists think that our solar system formed from an asteroid belt. | null | null | Multiple Choice | a. true, b. false | b |
7,864 | NDQ_002401 | introduction to the solar system | The planets formed when pieces of matter collided and clumped together. | null | null | Multiple Choice | a. true, b. false | a |
7,865 | NDQ_002402 | introduction to the solar system | Our solar system contains five dwarf planets. | null | null | Multiple Choice | a. true, b. false | a |
7,866 | NDQ_002403 | introduction to the solar system | The planet closest to the sun is Venus. | null | null | Multiple Choice | a. true, b. false | b |
7,867 | NDQ_002404 | introduction to the solar system | The planet with the greatest mass and diameter is Saturn. | null | null | Multiple Choice | a. true, b. false | b |
7,868 | NDQ_002405 | introduction to the solar system | Planets farther from the sun have orbits that are farther apart. | null | null | Multiple Choice | a. true, b. false | a |
7,869 | NDQ_002406 | introduction to the solar system | The orbits of the planets are nearly circular. | null | null | Multiple Choice | a. true, b. false | a |
7,870 | NDQ_002407 | introduction to the solar system | Our sun is the only star that has planets revolving around it. | null | null | Multiple Choice | a. true, b. false | b |
7,871 | NDQ_002408 | introduction to the solar system | Our solar system includes | null | null | Multiple Choice | a. galaxies., b. asteroids., c. black holes., d. constellations. | b |
7,872 | NDQ_002409 | introduction to the solar system | The early Earth-centered model of the universe was proposed by | null | null | Multiple Choice | a. Galileo., b. Ptolemy., c. Copernicus., d. none of the above | b |
7,873 | NDQ_002410 | introduction to the solar system | The planet that is most similar to Earth in mass and diameter is | null | null | Multiple Choice | a. Mars., b. Venus., c. Jupiter., d. Mercury. | b |
7,874 | NDQ_002411 | introduction to the solar system | Which statement is true about the inner planets of our solar system? | null | null | Multiple Choice | a. They formed before the sun formed., b. They formed from dense elements., c. They include Mars and Jupiter., d. They have very long years. | b |
7,875 | NDQ_002412 | introduction to the solar system | All planets of our solar system orbit the sun | null | null | Multiple Choice | a. in the same plane., b. at the same speed., c. in the same direction., d. two of the above | d |
7,876 | NDQ_002413 | introduction to the solar system | How long the day lasts on a planet depends on its | null | null | Multiple Choice | a. distance from the sun., b. speed of revolution., c. speed of rotation., d. length of orbit. | c |
7,877 | NDQ_002414 | introduction to the solar system | To be a planet, an object must | null | null | Multiple Choice | a. be big enough that its own gravity makes it round., b. have cleared its path of smaller objects., c. orbit a star., d. all of the above | d |
7,878 | NDQ_002415 | inner planets | hottest of all the planets in the solar system | null | null | Multiple Choice | a. Mercury, b. Opportunity, c. Mars, d. inner planet, e. Earth, f. Messenger, g. Venus | g |
7,879 | NDQ_002416 | inner planets | What explains the number of impact craters on Mercury? | null | null | Multiple Choice | a. It is very close to the Sun., b. The craters have been overrun by lava flows., c. It is not geologically active., d. It is subject to constant storms. | c |
7,880 | NDQ_002417 | inner planets | rover that explored Mars surface | null | null | Multiple Choice | a. Mercury, b. Opportunity, c. Mars, d. inner planet, e. Earth, f. Messenger, g. Venus | b |
7,881 | NDQ_002418 | inner planets | The largest volcano in the solar system is a __________ volcano a on the planet ___________. | null | null | Multiple Choice | a. composite; Mars, b. shield; Mars, c. composite; Venus, d. shield; Venus | b |
7,882 | NDQ_002419 | inner planets | only planet in the solar system known to have plate tectonics | null | null | Multiple Choice | a. Mercury, b. Opportunity, c. Mars, d. inner planet, e. Earth, f. Messenger, g. Venus | e |
7,883 | NDQ_002420 | inner planets | What is true of life on the inner planets? | null | null | Multiple Choice | a. Earths Moon had life in ancient oceans., b. Venus has microbes beneath its thick atmosphere, c. Mars has ancient fossil microbes, d. There is only life on Earth | d |
7,884 | NDQ_002421 | inner planets | Why is Venus the hottest planet? | null | null | Multiple Choice | a. It is closest to the Sun, b. It has a powerful greenhouse effect., c. It has the most internal heat, d. It spins the fastest. | b |
7,885 | NDQ_002422 | inner planets | any of the four planets closest to the sun | null | null | Multiple Choice | a. Mercury, b. Opportunity, c. Mars, d. inner planet, e. Earth, f. Messenger, g. Venus | d |
7,886 | NDQ_002423 | inner planets | smallest of all the planets in the solar system | null | null | Multiple Choice | a. Mercury, b. Opportunity, c. Mars, d. inner planet, e. Earth, f. Messenger, g. Venus | a |
7,887 | NDQ_002424 | inner planets | Evidence for liquid water in the Martian past includes | null | null | Multiple Choice | a. water-eroded canyons, b. fossil fish, c. the presence of polar ice currently, d. all of these | a |
7,888 | NDQ_002426 | inner planets | spacecraft that is orbiting and studying Mercury | null | null | Multiple Choice | a. Mercury, b. Opportunity, c. Mars, d. inner planet, e. Earth, f. Messenger, g. Venus | f |
7,889 | NDQ_002427 | inner planets | planet with the largest volcano in the solar system | null | null | Multiple Choice | a. Mercury, b. Opportunity, c. Mars, d. inner planet, e. Earth, f. Messenger, g. Venus | c |
7,890 | NDQ_002435 | inner planets | All of the inner planets were once geologically active. | null | null | Multiple Choice | a. true, b. false | a |
7,891 | NDQ_002437 | inner planets | Venus has the largest greenhouse effect of the inner planets. | null | null | Multiple Choice | a. true, b. false | a |
7,892 | NDQ_002440 | inner planets | Venus is the only inner planet with a large moon besides Earth. | null | null | Multiple Choice | a. true, b. false | b |
7,893 | NDQ_002442 | inner planets | Besides Earth, the inner planets are all solid. | null | null | Multiple Choice | a. true, b. false | b |
7,894 | NDQ_002443 | inner planets | The inner planets spin faster than the outer planets. | null | null | Multiple Choice | a. true, b. false | b |
7,895 | NDQ_002444 | inner planets | All of the inner planets | null | null | Multiple Choice | a. have very rapid rotation., b. have a thick atmosphere., c. have one or more moons., d. are solid, dense, and rocky. | d |
7,896 | NDQ_002445 | inner planets | Which statement about Mercurys core is false? | null | null | Multiple Choice | a. It is very small., b. It contains mostly iron., c. It exists in a molten state., d. It makes up 42% of Mercurys volume. | a |
7,897 | NDQ_002446 | inner planets | Venus has all of the following except | null | null | Multiple Choice | a. moons., b. valleys., c. mountains., d. lava plains. | a |
7,898 | NDQ_002447 | inner planets | Which process explains why Venus is very hot? | null | null | Multiple Choice | a. greenhouse effect, b. volcanic activity, c. plate tectonics, d. none of the above | a |
7,899 | NDQ_002448 | inner planets | The inner planet with an average surface temperature of 14 C is | null | null | Multiple Choice | a. Mercury., b. Venus., c. Earth., d. Mars. | c |
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