Weathering & Erosion
Deposition & Landforms
Sand Dunes & Sea Oats
Volcanoes & Earthquakes
Name that Force
100
What is the difference between weathering and erosion?
Weathering = breaking rocks into smaller pieces; Erosion = moving those pieces to a new place
100
What is deposition?
The dropping of sediments to build up new land
100
What is a sand dune?
A hill or pile of sand formed by wind
100
Why are volcanoes considered constructive?
They build new landforms like mountains and islands
100
What does a constructive force do to Earth’s surface?
Builds up land
200
A rock cracks because water freezes inside. Is this weathering, erosion, or deposition?
Weathering
200
A river drops sand and gravel at its mouth. What landform is created?
A delta
200
Which part of the sea oats helps prevent erosion: roots or leaves?
Roots
200
Name one destructive effect of a volcanic eruption.
Destroying towns, forests, or covering land in ash
200
What does a destructive force do to Earth’s surface?
Breaks down land
300
Soil washed away from farmland is an example of what process?
Erosion
300
Over time, deposition in a lake causes what to happen to the depth of the lake?
A. It gets deeper (depth increases)
B. It spreads all over
C. It gets shallower (depth decreases)
C. It gets shallower (depth decreases)
Why?: Because as more sediment is being deposited in the lake, it makes the lake shallower (not as deep).
300
Why do scientists plant sea oats on sand dunes?
A. Increase weathering to move the sand dunes from one place to another
B. To reduce deposition
C. To decrease the amount of sand on the beach
D. To reduce erosion of the sand dunes
D. To reduce erosion — the roots hold sand in place.
300
What does an earthquake hazard map show?
The chance of earthquake damage in different places
300
Volcanoes are considered ________ because they form new land.
Constructive
400
In the “before and after” farmland pictures, which process caused the changes in soil patterns?
Weathering- because the ground broke down over a period of time.
400
Which model best shows how sediments can change a lake’s depth?
A. evaporation
B. adding sand/gravel/plant material
C. flowing water
B. Adding sand, gravel, and plant material into water
400
How does wind affect sand dunes?
A. causes sand dunes to break into smaller pieces
B. causes sand to deposit in a large body of water
C. It moves sand, changing the size and shape of dunes
It moves sand, changing the size and shape of dunes
400
What is one cause of man-made earthquakes in Texas?
A. Underground caves
B. Digging to China
C. Oil drilling
C. Oil drilling
400
Hurricanes, earthquakes, and erosion are examples of ________ forces.
Destructive
500
True or False: Weathering moves materials to new locations.
False (Weathering only breaks rocks; erosion moves them)
500
True or False: Deposition always makes landforms smaller.
False — it builds up land
Why?
500
After a hurricane, why is a sand dune smaller than before? What is the process called?
Erosion moved sand away due to wind, rain, and tides
500
Earthquakes break apart land and create cracks. Is this constructive or destructive?
Destructive
500
Double Jeopardy:
Can one event be both constructive and destructive? Give an example.
Yes — a volcanic eruption (constructive: builds new land; destructive: destroys land/habitats)