TEST - SCIENCE - 7TH - 2P 2T

Look at the table. Which gas is the most abundant?

• Oxygen

• Carbon dioxide

• Nitrogen

• Argon.

What gas wasn’t present when the atmosphere originated?

• Oxygen

• Carbon dioxide

• Nitrogen.

• Argon

Which layer is not part of the atmosphere?

• The troposphere.

• The lithosphere

• The exosphere

• The thermosphere

Which layer of the atmosphere is farthest from the earth’s surface?

• The thermosphere

• The stratosphere.

• The exosphere.

• The troposphere

In which layer are meteorological phenomena produced?

• . In the thermosphere.

• In the stratosphere

• In the exosphere.

• In the troposphere.

Where is the largest amount of water on the planet found?

• The atmosphere

• The oceans.

• Underground.

• Lakes, rivers and streams.

Which statements explain the importance of the lithosphere for life?

I. Plants get the water necessary for photosynthesis from it.

II. Wind energy is obtained from it.

III. It is indispensable for agriculture.

• I and II

• II and III.

• I and III

• I, II and III.

Which factor is not negative for the atmosphere?

• An increase in acid rain.

• The production of oxygen.

• A reduction in ozone

• Acid rain.

Which is an internal geological phenomenon?

• Agriculture

• A volcanic eruption.

• Wind erosion

• . The oceans.

Look at the graph. What is the major component of soil?

• Air

• Water

• Minerals.

• Organic matter