Landforms
What are landforms?
Landforms are natural features of Earth's crust.
What is weathering?
Weathering is the process in which rocks in Earth's crust are slowly broken into smaller pieces.
What is erosion?
Erosion is the process of moving weathered rock.
What is an avalanche?
An avalanche is fast-moving snow and ice that races down a mountain.
Earth undergoes weathering all the time.
What are two examples of landforms?
What are the two types of weathering that occur on Earth's surface?
The two types of weathering are physical weathering and chemical weathering.
What are some examples of things that can cause erosion?
Water, ice, gravity, and wind can all cause erosion and move weathered rock.
What is a landslide?
A landslide is the quick downhill movement of great amounts of rock and soil.
What are two ways in which Earth changes slowly?
Weathering, erosion, and deposition are all examples of how Earth changes slowly.
What is true about Earth's surface?
Earth's surface is constantly changing.
What is physical weathering?
Physical weathering is when rocks break into smaller pieces of the same kind of rock, and only the size of the rock changes.
Why would people build barriers along their seashore?
People would build barriers along the seashore to stop erosion.
What is a volcano and how does it change Earth's surface?
A volcano is a landform that causes Earth's surface to change rapidly. Volcanoes form at a weak spot in Earth's crust. Lava erupts from the volcano, causing new ash and rock to change Earth's surface.
What is erosion and how do people try to prevent it along the seashore?
Erosion is the process of moving weathered rock. This can be done by water, ice, gravity, and wind. People try to prevent erosion along the seashore by placing barriers between the water and the land.
What are peninsulas?
What is chemical weathering?
Chemical weathering is when rocks break into smaller pieces but the material the rock is made of changes due to chemicals.
What are three types of erosion that cause Earth to change slowly?
Rain, waves, and glaciers are all forms of erosion that change Earth slowly.
What is an earthquake and how does it happen?
Earthquakes are Earth's plates moving suddenly, causing the crust to shake. Earthquakes happen at a fault, which is a break in Earth's crust. Earthquakes change Earth's surface rapidly.
What is deposition and how does it change Earth's surface?
Deposition is the laying down of pieces of Earth's surface. Deposition builds up Earth's surface over time, and changes Earth's surface slowly.
What is Earth's crust?
Earth's crust is a layer of rock that covers Earth.
How are physical weathering and chemical weathering alike?
Physical weathering and chemical weathering both break rocks into smaller pieces. They both also cause changes to Earth slowly.
What are four types of erosion that cause Earth to change rapidly?
Landslides, avalanches, volcanoes, and earthquakes are all forms of erosion that cause Earth to change rapidly.
How are landslides and avalanches similar?
Landslides and avalanches are similar because they are both two types of erosion that change Earth's surface rapidly. They both have downhill movements that race down a landform such as a mountain or hill.
Explain how rain and glaciers cause erosion.
Rain causes erosion by carrying pieces of weathered rock, along with soil, to another location, such as down a mountain. Glaciers cause erosion by sliding across Earth's surface and wearing it away.