Unit Review

It's something that comes from nature that people can use

• Volcano

• Natural resources

• Earthquake

• Non of the answers

Oil, coal, and natural gas are examples of (a)  

Based on the picture; choose the correct order. Orange --> Green --> Blue

• Recycle --> Reuse --> Reduce

• Reuse --> Reduce --> Recycle

• Reduce --> Reuse --> Recycle

The most fertile soil layer

• Topsoil

• Bedrock

• Subsoil

• Surface layer

The correct order of the soil types based on the size of the particles (from bigger to smaller)

• Sand < Silt < Clay

• Silt > Clay > Sand

• Clay > Sand > Silt

• Sand > Silt > clay

Soil is a mixture of water, air​ , rocks, and ________​ .

The are ​four layers of soil which are: a) Surface b) _________ c) ​_________ , and d) Bedrock​ .

(a)  

What makes soil darker in colour

• Sand

• Humus

• The size of particles

• Bedrock

Has small pieces of rock but doesn't have lots of humus

• Topsoil

• Subsoil

• Surface layer

• Bedrock

One way to distinguish soil types is by

• The moisture

• The location

• The size of the particles

• Non of the answers

Which type of soil has particles of rock that you can see with your eyes?

• Sand

• Silt

• Clay