AA Natural Sciences 3

Question 1

What is the speed of light in a vacuum?

Accepted Answer

3 × 10⁸ m/s

Answer

The speed of light in a vacuum is approximately 3 × 10⁸ meters per second (about 186,000 miles per second).

Question 2

What is the process by which water vapor turns into liquid water called?

Accepted Answer

Condensation

Answer

Condensation occurs when water vapor cools and changes state to liquid, as seen on a cold glass on a humid day.

Question 3

Which part of the brain controls balance and coordination?

Accepted Answer

Cerebellum

Answer

The cerebellum, located at the back of the brain, coordinates voluntary movements and maintains balance.

Question 4

What type of bond involves the sharing of electrons between atoms?

Accepted Answer

Covalent bond

Answer

Covalent bonds form when two atoms share one or more pairs of electrons to achieve stable electron configurations.

Question 5

Which layer of Earth is the thickest?

Accepted Answer

Mantle

Answer

Earth's mantle extends from the crust to the outer core, making it the thickest layer at about 2,900 km thick.

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