6. What do you call the depression caused by the objects that fell on a
planet or moon?
A. canyon
B. crater
C. plateau
D. pothole
7. Which could have probably caused the extinction of dinosaurs?
A. They caught the flu.
B. An asteroid hit the Earth.
C. They ate each other until they went extinct.
D. A meteorite came and hit the Earth causing their extinction.
8. What causes the bright sparks of light brought by meteors?
A. humidity
B. air friction
C. condensation
D. atmospheric pressure
9. What is the major difference among comet, meteor, and asteroid in terms
of structure?
A. Comet contains icy shell while asteroid and comet do not have.
B. Meteor contains icy shell while asteroid and comet do not have.
C. Asteroid and comet contain icy shell while meteor does not have.
D. Asteroid contains icy shell while asteroid and meteor do not have.
10. Which of the following is the correct location of comets?
A. Kuiper Belt
B. Asteroid Belt
C. Neptune's orbit
D. Earth's atmosphere
11. What do you call a celestial body that reaches the Earth's crust?
A. comet
B. meteor
C. meteorite
D. meteoroid
12. What will happen if a comet gets closer to the sun? A comet will
A. expire
B. explode
C. melt and disappear
D. form a long tail made of gas and dust​