Science 4 Fourth Qtr

1. Which kind of soil is best for growing plants?

• clay

• loam

• sand

• silt

In which layer of the soil will plants grow best?

• bedrock

• subsoil

• topsoil

• all of these

What kind of soil can hold a lot of water?

• clay

• loam

• sand

• silt

Which kind of soil are best as construction materials?

• sand and gravel

• silt and gravel

• sand and loam

• gravel and loam

Which of these materials is biodegradable?

• ceramic flower vase

• plastic comb

• tissue

• metal spoon

Which of these materials can be recycled?

• bottles

• banana peeling

• sand

• silt

Which kind of soil is used for making pots?

• clay

• loam

• sand

• silt

Which of the following may cause chemical weathering?

• acid

• animals

• people

• plants

Which of the following does not show mechanical weathering?

• Changes in temperature may physically break rocks

• As the roots of plants grow bigger, the rock above them breaks physically

• Lichens produce an acid that reacts with the minerals in rocks, weakening and loosening the rock.

• Burrowing animals such as earthworms, moles and mice loosen and breakdown rocks into pieces.

What material makes loam soil suitable for planting crops?

• air

• humus

• minerals

• water