GRADE 6 REVISION

Which of the following processes breakdown rocks physically and chemically?

• Erosion

• Deposition

• Weathering

• Abrasion

If greenhouse gases increase and build up in our atmosphere, what happens?

• They trap more heat and global temperatures rises.

• They trap less heat and global temperatures rises.

• They trap more heat and global temperatures decreases.

• They trap less heat and global temperatures decreases.

What process is caused by the roots of this plant?

• Erosion.

• Deposition.

• Physical weathering.

• Chemical weathering.

The energy coming in to the earth from the sun minus the energy being radiated out is known as…

• The greenhouse effects.

• Global warming.

• Earth’s energy budget.

• Sunlight energy.

According to the diagram, what can happen when solar energy hits clouds in Earth's atmosphere?

• It can be reflected or absorbed

• It can only be reflected

• It can only be absorbed

• It is not reflected or absorbed

What would happen if the earth’s atmosphere is destroyed?

• The earth will be very hot.

• The earth will be very cold.

• The earth will become ice

• Plants will grow in the desert.

The way in which heat is trapped close to the surface of Earth by gases in our atmosphere is known as…

• The trapping effect.

• The greenhouse effect.

• The earth’s energy budget effect.

• The atmosphere effect.

What is the primary source of energy for the Earth?

• Wind energy

• Electrical energy

• The sun

• Natural gas

What is the movement of rocks and soil from one place to another?

• Weathering

• Erosion

• Deposition

• Abrasion

What is the breaking up of rocks into smaller pieces without changing the chemical composition?

• Physical weathering

• Chemical weathering

• Erosion

• Deposition