The craters on the moon were created by (Meteorites/ Sun rays/ Earth's gravitation).
Important Questions on Additional Resources – 3
Why do the gas giants appear striped?
Hydrogen is the source of the heat and light of stars.
The atmosphere of Venus is made up of mainly _____.
“The composition of the atmosphere makes the earth ideal for the existence of life.” Can you explain this statement? What would happen if there were a lot more nitrogen in air or a lot less?
Why do the terrestrial planets not have rings and why do only two of them have moons? Do not hesitate to make a guess. Remember that many theories were initially inspired guesses. Once you have made a guess, look for answers in the library or on the Internet. Keep in mind that we do not have all the answers to the mysteries of the universe.
If you were a scientist exploring the possibility of life on another planet, what signs would you look for?
Movements of the tectonic plates have created mountains and valleys.
What causes the greatest harm to human life in an earthquake—fires, floods or the collapse of buildings?
