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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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Presentation Transcript
slide1

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

slide2

True or false…

Erosion occurs when rocks are not moving…

slide8

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

slide10

_______is the most important erosional agent and

erodes most often in streams or rivers.

slide11

Wateris the most important erosional agent and

erodes most often in streams or rivers.

slide12

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

slide13

B The shape and size of

beaches will be changed

slide14

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

slide15

C. a force opposes the motion of

the scooter but not the rider

slide16

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

slide18

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

slide20

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

Which of these does the pulley change?

slide22

Chemical weathering happens quickly in

______, _______environments because

water is needed for the chemical reactions.

slide24

In chemical weathering, a rock is broken

down by ______ ______that change its

mineral composition and physical

and chemical properties

slide26

True of False:

Water can chemically weather rocks by

dissolving rocks.

slide28

True of False:

Living organisms such as Lichens do not chemically weather rocks.

slide30

True of False:

Rust is a form of chemical weathering

slide32

Mechanical weathering:

__________ breaks rocks down into smaller pieces

slide34

True or False:

Weathering happens to rocks that are moving.

slide46

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

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