ETE-SCI-IV-02-20

Read the information and answer the questions

Air is mostly gas. Air is all around us, but we can’t see it. So what is air, exactly? It’s a mixture of different gases. The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

According to the text, we can conclude that:

• Air is a solid

• Air is mostly gas

• Air is a microorganism

• Air is in the sky

Read the text and answer the questions

The air in Earth’s atmosphere is made up of approximately 78 percent nitrogen and 21 percent oxygen. Air also has small amounts of lots of other gases, too, such as carbon dioxide, neon, and hydrogen.

According to the text, we can concluded that:

• The air in Earth´s atmosphere is made up approximately 78 percent nitrogen and 21 percent oxygen.

• The air in Earth´s atmosphere is made up approximately 68 percent nitrogen and 31 percent oxygen.

• The air in Earth´s atmosphere is made up approximately 98 percent nitrogen and 31 percent oxygen.

• The air in Earth´s atmosphere is made up approximately 48 percent nitrogen and 31 percent oxygen.

What is the name of this natural resource?

• water

• soil

• plant

• air

How humans can reconsider their actions to take care soil?

• Throwing trash

• stopping industry pollution

• consuming plastic

• wasting water

This image looks like a

• natural environmet

• a park

• desert

• dessert

How soil is formed?

• by using rocks

• by the combination of physical procesess

• by the use of light

• by the use of water

Rocks undergo on the process of contractions at

• the midnignt

• night

• during the day

• day

Rocks undergo on the process of expansion during the

• night

• day

• afternoon

• midday

1. Why does water play and important role in soil formation?

• Because water gets collected in the cracks of rocks

• It is important for plants

• because we need water

• it is healthy

1. What is the name of some living organisms that grow on rock surfaces?

• Fungies

• Linches

• rocks

• water