Share changes in landform over time
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What is physical weathering?
Rocks melting into lava
Rocks breaking into smaller pieces without changing material
Soil being carried by wind
Rocks disappearing into water
Which example shows physical weathering?
A river carrying rocks downstream
Water freezing in rock cracks and breaking the rock apart
Sand blowing across a desert
Soil settling at the bottom of a river
What happens during erosion?
Rocks melt underground
Rocks change color
Rocks break into smaller pieces
Materials like sand and soil move to a new place
Which force can cause erosion?
heat
sound
light
wind
Which example shows erosion?
Soil forming from rock
A rock cracking apart
Wind blowing sand across land
Water freezing in cracks
What happens during deposition?
Rocks turn into soil
Materials break apart
Materials move quickly
Materials are dropped in a new location
When does deposition usually happen in water?
When water freezes
When water slows down
When water speeds up
When water disappears
What is the best evidence that a flood happened?
Clear skies
Warm weather
Rocks and soil left on sidewalks and roads
Dry soil
What happens when rainfall increases?
Nothing changes
Weathering stops
Less erosion happens
More erosion and more deposition occur
What usually happens first?
Flooding
Deposition
Weathering
Erosion
Which shows the correct order of processes?
Erosion → Weathering → Deposition
Weathering → Erosion → Deposition
Deposition → Weathering → Erosion
Erosion → Deposition → Weathering
Ocean waves breaking rocks into smaller pieces is an example of:
Erosion
Weathering
Deposition
Flooding
Water gets into a small crack in a rock. Overnight the temperature drops and the water freezes. What will most likely happen to the rock?
The rock will turn into soil
Nothing will happen
The rock will crack because the ice expands
the rock will melt
A scientist pours water into a crack in a rock. The water freezes overnight. The next day the crack is larger. What caused the change?
The water evaporated
The water expanded when it froze
The rock moved downhill
The rock melted
What is sediment?
Ice inside rocks
Melted rock
Soil, sand, and small rocks that can be moved by water or wi
Air trapped underground
What force pulls water downhill and helps cause erosion?
light
heat
sound
gravity
