GED Science Earth and Space Science 3

Question 1

Which layer of Earth's atmosphere contains the ozone layer that absorbs most of the Sun's ultraviolet radiation?

Accepted Answer

Stratosphere

Answer

The ozone layer sits within the stratosphere, roughly 15–35 km above Earth's surface, where it absorbs harmful UV-B and UV-C radiation.

Question 2

What process causes the formation of igneous rocks?

Accepted Answer

Cooling and solidification of magma or lava

Answer

Igneous rocks form when molten rock (magma underground or lava at the surface) cools and solidifies.

Question 3

A star appears to change position slightly against distant background stars when viewed six months apart. This effect is called:

Accepted Answer

Parallax

Answer

Stellar parallax is the apparent shift in a nearby star's position due to Earth's orbital motion around the Sun, and it is used to measure stellar distances.

Question 4

Which type of boundary is associated with the formation of deep ocean trenches?

Accepted Answer

Convergent boundary

Answer

At convergent boundaries, one tectonic plate subducts beneath another, forming deep ocean trenches such as the Mariana Trench.

Question 5

The water cycle process by which plants release water vapor through their leaves is called:

Accepted Answer

Transpiration

Answer

Transpiration is the release of water vapor from plant leaves through tiny pores called stomata, contributing significantly to the water cycle.

GED Practice Test

GED Practice Test

GED Science Earth and Space Science 3