Formative Practice 13.1 – Science Form 2 Chapter 13


Question 1:
Explain the stages and names of a meteoroid as it enters the atmosphere of the Earth.

Answer:
When a meteoroid moves close to the Earth, it will enter the atmosphere of the Earth due to the gravity of the Earth.
When a meteoroid enters the atmosphere of the Earth and burns, it will be known as a meteor. If the meteor does not stop burning in the atmosphere, and reaches the Earth as rock fragments, the meteor will then be known as a meteorite.


Question 2:
How does the collision between an asteroid and the Earth happen? Explain your answer.

Answer:
Collisions between an asteroid and the Earth happen because the path of the asteroid path intersects with or is very close to the orbit of the Earth.
If an asteroid and the Earth are at the intersection point at the same time, a collision might happen.


Question 3:
Why does the tail of a comet always face away from the Sun?

Answer:
When the path of a comet is close to the Sun, the high temperature of the Sun will cause part of the ice structure of the comet to change into gas, which shapes the tail of the comet. Due to the fact that the area with gas has a lower mass than the head portion, the tail portion will always be away from the Sun because of the effect of the gravity of the Sun on the comet.

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