Question: Answer the following question given this paragraph:   The rate at which a device changes electric current to another form of energy is called electric power . The SI unit of power—including electric power—is the watt. A watt equals 1 joule of energy per second. High wattages are often expressed in kilowatts, where 1 kilowatt equals 1000 watts. The power of an electric device, such as a microwave, can be calculated if you know the current and voltage of the circuit. This equation shows how power, current, and voltage are related:.   Q: What term describes the rate at which a device changes electric current to another form of energy?   Choices:  - kilowatts  - voltage  - kinetic energy  - electric power  A:
Answer: electric power

Question: Answer the following question given this paragraph:   A star like our Sun will become a red giant in its next stage. When a star uses up its hydrogen, it begins to fuse helium atoms. Helium fuses into heavier atoms like carbon. At this time the star’s core starts to collapse inward. The star's outer layers spread out and cool. The result is a larger star that is cooler on the surface, and red in color.   Q: What is our sun's next stage called?   Choices:  - blue giant  - white giant  - super nova  - red giant  A:
Answer: red giant

Question: Answer the following question given this paragraph:   Greenhouse gases include CO 2 , H 2 O, methane, O 3 , nitrous oxides (NO and NO 2 ), and chlorofluorocarbons (CFCs). All are a normal part of the atmosphere except CFCs. The table below shows how each greenhouse gas naturally enters the atmosphere ( Table below ).   Q: Co 2 , h 2 o, methane, o 3 , nitrous oxides (no and no 2 ), and chlorofluorocarbons (cfcs) are known as what type of gases?   Choices:  - chemical gases  - hydrogen gases  - carbonate gases  - greenhouse gases  A:
Answer: