Erosion
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Erosion. Potpourri. Chemical Weathering. Mechanical Weathering. Deposition. 1pt. 1 pt. 1 pt. 1pt. 1 pt. 2 pt. 2 pt. 2pt. 2pt. 2 pt. 3 pt. 3 pt. 3 pt. 3 pt. 3 pt. 4 pt. 4 pt. 4pt. 4 pt. 4pt. 5pt. 5 pt. 5 pt. 5 pt. 5 pt. True or false…

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2 pt

Erosion

Potpourri

Chemical

Weathering

Mechanical

Weathering

Deposition

1pt

1 pt

1 pt

1pt

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3 pt

3 pt

3 pt

3 pt

3 pt

4 pt

4 pt

4pt

4 pt

4pt

5pt

5 pt

5 pt

5 pt

5 pt


2 pt

True or false…

Erosion occurs when rocks are not moving…


2 pt

False


2 pt

What can be moved because of erosion?


2 pt

Rocks, sediment, and Earth materials


2 pt

The formation of sand dunes is the result of —


2 pt

Deposition


2 pt

The rich topsoil of the prairie in the picture shown makes this

ecosystem suitable for the growth of a variety of grasses. All of

the following processes contribute to the formation of the topsoil

in the prairie except —

A weathering of rocks

B ocean waves

C deposition of weathered material

D decomposition of living things


2 pt

ocean waves


2 pt

_______is the most important erosional agent and

erodes most often in streams or rivers.


2 pt

Wateris the most important erosional agent and

erodes most often in streams or rivers.


2 pt

A hurricane forms over the ocean and hits the Texas coast and travels inland. What is the most likely effect of this event?

A More species of animal will inhabit the coast

B The shape and size of beaches will be changed

C The affected area will be less vulnerable to future natural disasters

D Native plants will never inhabit the area again


2 pt

B The shape and size of

beaches will be changed


2 pt

When the scooter hits a rock, the rider tends to fly forward because –

A objects at rest tend to stay at rest

B the scooter is subjected to a balanced force

C a force opposes the motion of the scooter but not the rider

D unbalanced forces cause objects to move at a constant speed


2 pt

C. a force opposes the motion of

the scooter but not the rider


2 pt

Which of the following is a force

that can oppose or change motion?

A.gravity

B.air resistance

C.friction

D.all of the above


2 pt

D.all of the above


2 pt

Force

  • The diagram above illustrates a movable pulley. This pulley gives a mechanical advantage by -

    • A reducing the force required to lift the load.

    • B changing the force direction

    • C requiring the force to be greater than the load

    • D requiring the force to move less distance than the load

Load


2 pt

  • A. reducing the force required

  • to lift the load.


2 pt

The picture shows a simple fixed pulley being used to lift a heavy box.

Which of these does the pulley change?


2 pt

C. The direction of force required to move the box


2 pt

Chemical weathering happens quickly in

______, _______environments because

water is needed for the chemical reactions.


2 pt

warm, moist


2 pt

In chemical weathering, a rock is broken

down by ______ ______that change its

mineral composition and physical

and chemical properties


2 pt

chemical reactions


2 pt

True of False:

Water can chemically weather rocks by

dissolving rocks.


2 pt

True


2 pt

True of False:

Living organisms such as Lichens do not chemically weather rocks.


2 pt

False


2 pt

True of False:

Rust is a form of chemical weathering


2 pt

True


2 pt

Mechanical weathering:

__________ breaks rocks down into smaller pieces


2 pt

physically


2 pt

True or False:

Weathering happens to rocks that are moving.


2 pt

False


2 pt

Explain how this is an example of weathering?


2 pt

The tree roots are growing into the rock prying it into smaller pieces


2 pt

How does freezing and thawing cause mechanical weathering?


2 pt

When water freezes, it expands causing the cracks go grow


2 pt

What is abrasion?


2 pt

Abrasion is mechanical weathering in which rocks rub against each other wearing them down


2 pt

What is it called when a glacier picks up a rock, or sediments off of the ground?


2 pt

Plucking


2 pt

How can wind be a cause of erosion?


2 pt

Wind can blow sediment (dirt) from one place to another


2 pt

What happens to rocks and sediment that are plucked by glaciers whenever the glacier melts?


2 pt

The rocks and sediment are deposited

in a new location.


2 pt

Describe how waves in the ocean can cause erosion.


2 pt

Waves can cause beaches and coastlines to be reformed time after time


2 pt

What force causes rock slides and

mud flows?


2 pt

Gravity!


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