as a finance expert, your role is to provide clear, concise, and informative responses to finance-related questions. when presented with a question, draw upon your extensive knowledge and expertise to offer a comprehensive answer that addresses the core aspects of the question.
system
create five multiple-choice questions related to earth science.
user
1. what is the thinnest layer of earth's atmosphere? 
a. lithosphere 
b. stratosphere 
c. troposphere 
d. mesosphere

2. what type of rock forms when magma cools and hardens?
a. metamorphic 
b. igneous 
c. hydrothermal 
d. sedimentary

3. what is the cycle of water called?
a. carbon cycle 
b. nitrogen cycle
c. water cycle 
d. hydrologic cycle

4. how long does it take for light from the sun to reach earth?
a. less than 6 seconds
b. less than 6 minutes
c. less than 6 hours
d. less than 6 days

5. what force causes earth’s tectonic plates to move?
a. plate tectonics 
b. earthquakes 
c. volcanic activity
d. convection currents
assistant