AFCT General Science: Earth and Space 2

Question 1

What causes the seasons on Earth?

Accepted Answer

The tilt of Earth's axis at 23.5 degrees relative to its orbital plane

Answer

Changes in Earth's distance from the Sun

Answer

Variations in the Sun's energy output

Answer

The Moon's gravitational pull on Earth

Question 2

What type of rock is formed from cooled and solidified magma or lava?

Accepted Answer

Igneous rock

Answer

Sedimentary rock

Answer

Metamorphic rock

Answer

Composite rock

Question 3

What is the main composition of the Sun?

Accepted Answer

Hydrogen and helium

Answer

Iron and nickel

Answer

Carbon and oxygen

Answer

Nitrogen and argon

Question 4

What layer of Earth's atmosphere contains the ozone layer that protects life from harmful UV radiation?

Accepted Answer

Stratosphere

Answer

Troposphere

Answer

Mesosphere

Answer

Thermosphere

Question 5

What drives the movement of tectonic plates on Earth?

Accepted Answer

Convection currents in the mantle

Answer

The Moon's gravitational force

Answer

Wind erosion on the surface

Answer

Earth's magnetic field

Question 6

What is a light-year a measure of?

Accepted Answer

Distance

Answer

Time

Answer

Brightness

Answer

Speed