Science Review

Soil is important because

• Tires can leave prints in it
• it can be moved to build houses
• It can be used to dig big holes
• it provides plants with nutrients

What heat source causes evaporation in the water cycle?

• Electricity
• Water
• Wind
• Sun

A family moved to a farm in the country. How do they most likely get running water  into their house? 

• They have a well outside their house.
• The water is brought by a truck from the ocean.
• They go to the creek and fill up buckets.
• The water is brought by a truck from the city.

Which item would NOT make soil richer?

• Tree limbs
• Humus
• Dead leaves
• Soda cans

This soil is below the top layer. It is made mostly of sand and silt, but it has some clay  at the bottom. Which layer of soil is described? 

• topsoil
• subsoil
• mantle
• bedrock

What task is made possible by using a screw?

• replacing a light bulb
• cutting pieces of plastic
• lifting tools onto a roof
• raising a window shade

Simple machines make work---

• harder
• longer
• easier
• shorter

When animals die in the woods, they decay and become part of what soil component?

• clay
• humus
• silt 
• sand

Which is NOT naturally found in soil?

• clay
• sand 
• silt
• glass

Water on the bathroom mirror after a hot bath or shower is an example of — 

• evaporation
• condensation
• percipitation
• sleet