Constructive
Destructive
Water
C and D forces
Other Science
100

An area of new land at the mouth of a river, formed from sediments carried by the river.

What is a river delta?

100

The process of moving sediment by wind, moving water, or ice

What is Erosion?

100
Where would you most likely find a delta?
Near a river's mouth
100
Volcanoes can be constructive. Give an example of a chain of islands formed by volcanic activity.
Hawaiian Islands
100

Which process takes the longest to change the earth's surface?


weathering

200

This landform is created when two tectonic plates collide and one pushes up through the earth's crust: Convergent Plates

Mountains

200
What is weathering?
The process of breaking down rock by natural means
200
Why do sand dunes most likely form by an ocean
Water and wind can both move sand. Sand dunes form where the wind is strong and the sand deposits are plentiful. That is why the beach is the perfect location for them!
200
How do earthquakes happen?
The earth's plates collide on the fault lines
200

This theory was based on multiple observations where continents fit together like puzzle pieces and fossils on different continents belong together.

What is the Continental Drift Theory?

300

Name 3 types of constructive forces

What is Fault, Earthquake, Volcano, Deposition, or Wind (Sand Dunes)?

300

What are 2 kinds of weathering?

What is mechanical and chemcial?

300
How is moving water a destructive process?
Carries away broken rock/sediment. Can break down rocks into sediment.
300

Over the years, hurricanes and erosion has caused beaches in Panama City, Florida to disappear. Recently, sand has been pumped from the ocean to the shore to build up the beaches. This is an example of...

What is beach reclamation?

300

A truckload of sand was delivered to our house and dumped forming a hill. After a week the sand pile was no longer a hill.

What is erosion?

400

This constructive force moves sediment through the water until it is deposited to create a new landform

What is deposition?

400

Name one way humans are a destructive force on nature

Wat is Pollution, deforestation, over crowding, or carbon footprint?

400

Which of the following structures is built across a river to control the flow of water?

dam, levee, seawall, storm drain

dam and levee

400
Deposition can cause a river delta to form where a river empties into a larger body of water. True or False
True
400

This process causes sharp, rough mountains to become rounded and smooth over time.

What is weathering and erosion?

500

Two instruments used for Earthquakes 

What is a seismograph and the Richer Scale?

500
What are two phenomenon that can be both destructive and constructive depending on the situation?
Earthquakes and volcanoes
500
What type of rain is especially destructive?
Acid Rain
500
Explain how earthquakes and volcanoes can be both constructive and destructive forces
Answers vary...

Earthquakes and volcanoes can destroy or build things

500

What is the difference between dams and levees?

Dams go across the river and levees are along the banks of rivers.

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