Landforms
What are landforms?
Shapes on the planet's surface.
What can influence where people settle?
Earth's landforms.
What is weathering?
It is the process by which rock is broken down into smaller pieces.
What are continents and what does the plate tectonic theory suggest?
Continents: large landmasses
Plate tectonic theory suggests that the Earth's surface is divided into a dozen or so so moving plates, or pieces of the Earth's crust.
What are mountains and valleys?
Mountains: land that rises higher than 200 feet (610m)
Valleys: low areas of low land located between mountains and hills.
Many settlements are built near _________.
a.fertile river valleys
b.desserts
c. fertile deltas
d. a and c
e.b and c
d. a and c
What is erosion?
It is the movement of sediment from one location to another.
How do the Earth's plates move?
Energy deep inside the planet puts pressure on the Earth's plates. As the pressure builds up, it forces the plates to shift.
What are islands and peninsulas?
Island: areas of land completely surrounded by water.
Peninsulas: land surrounded by water on three sides.
True or False
The Himalayas and The Sahara desert attract large settlements.
False
What causes weathering?
2.Water
3.Ice
4.Roots of trees.
What is collusion and what does it form?
When two plates collide, one plate pushes under the other. This can happen with two ocean plates which forms ocean trenches such as the Marianna trench, two continental plates which forms mountain ranges such as the Andes and one continental and one ocean plate which forms mountain ranges too such as the Himalayas .
Fill in the blank
_______ mountains of central Colorado.
a. flat
b. rugged
b. Rugged
What do people who farm on steep hillsides do?
Cut terraces into the slope to create more level to grow their crops.
What causes erosion?
Wind, ice, and water all cause erosion.
What happens when plates separate what does it cause?
They move apart which allows magma rise to the Earth's crust. As the lava cools, it builds a mid-ocean ridge or underwater mountains. f they can grow high enough, they can form volcanic islands.
Why do geographers study how landforms are made and how they affect human activity?
Because they play an important role in geography.
Why have people built huge dams?
To divert water for use in nearby towns or farms.
How is a delta created?
Sediment that is carried by a river all the out to sea creates a delta.
What happens when plates slide and what can this form?
When they slide past each other, they sometimes grind together. This causes Earthquakes.