SES-5th Grade Science Unit 1

What is a destructive force?

• A natural process that destroys land
• A natural process that creates land
• A natural process where areas that are normally dry is covered in water

A constructive force is defined as

• a natural occurrence that can build up or break down
• an earthquake or a volcano
• a natural force that builds up and creates new land
• a destructive force that has been controlled

The picture here shows a landslide. What can you infer from the picture?

• Landslides are a destructive process that break apart the surface of the earth.

• Landslides are a constructive process that build new mountains and dams on the surface of the earth.

• Landslides are caused by volcanic eruptions,

• Landslides are helpful to road crews.

When the material that is worn down is carried away by wind, moving water, ice, living beings or gravity.

• Weathering 
• Erosion
• Deposition

When those materials stop moving and build up somewhere else.

• Weathering
• Erosion
• Deposition

What are the primary purposes for the use of dams?

• To prevent droughts and reverse the flow of a river.

• To keep unwanted marine organisms from moving down stream.

• To control floodwaters and store water for people to use.

• To make lakes so that people have a place to go fish.

What is something that humans can do to control water in areas that regularly experience floods?

• Dig wells to hold excess water.

• allow erosion to occur in order to make larger deltas

• build and use storm drains to move water to other areas.

• use a seismograph to see how much water is coming so that we can prepare for it's arrival.

Weathering can be created by

• wind
• ice
• water
• all of the above

Two ways humans try to control flooding

• levees

• glaciers

• sinkhole

• storm drains

Yesterday, this sand dune was not here. After a huge sandstorm, the sand dune appeared. What natural process occurred? 

• Deposition
• Weathering
• Erosion
• Landslide