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changes in landform over time

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