Social Studies 3G

1
Name 3 causes for RAPID (fast) landform changes?

• 1) earthquakes
• 2) volcanoes
• 3) floods

2
Name the layers of the Earth from inside, out.

1. Inner core
2. Outer core
3. Mantle
4. Crust

3
What layers of the earthssurface are made up of
many different pieces that fit together like a
puzzle?

• 1) crust
• 2) mantle

4
What causes earthquakes?

• When the crust and mantle pull away and push into
  each other. This causes a shaking of the Earths
  surface called earthquake.

5
What is a volcano?

• A volcano is an opening in the Earths surface
  from which lava flows.
• An eruption of a volcano can blow off a mountain
  top, cause liquid rock to build up new mountains
  and sometimes burn nearby forests and buildings.

6
What is a flood?

• A large amount of water that covers land which is
  normally dry. Floods often occur where heavy
  rains cause rivers to fill and overflow their
  banks into low lying areas.

7
How do floods change the land?

• Flood waters leave rich soil and sand behind,
  which can be good for crops.
• Floods damage buildings, roads.