Fast Changes
What is our Earth's crust broken up into?
Tectonic Plates
True or False: Slow changes happen in a day.
False: Slow changes can take at least a year or more to change the land.
Crust, Mantle, Outer Core, Inner Core
Which one of these is NOT a natural disaster?
Tsunamis
Hurricanes
Humans changing the land
Humans changing the land
What is it called when a seed starts growing in a crack?
Root wedging
What type of volcano has thick lava?
A cone volcano
What is weathering?
Breaking down of rocks and minerals.
This layer is what we stand on.
Crust
What is Earth's Processes?
How Earth changes over time.
What is a glacier?
A large, slow-moving mass of snow and ice
What components does a landslide need to occur?
Soil, water, rock, and a steep slope
What is erosion?
Movement of sediment by wind or water.
Which layer is as hot as the Sun's surface?
Outer Core
Where do most earthquakes and volcanoes occur?
The Ring of Fire
What do scientists use to rate the significance of an earthquake?
The Moment Magnitude Scale
Why does Buffalo not get earthquakes and volcanoes?
We are not near a plate boundary or where two plates meet.
Why do we get potholes in Buffalo? Which type of weathering is this?
Ice wedging from the snow causes the water to freeze and expand in cracks.
The mantle
How did the Grand Canyon form? Which example of slow change happened?
Erosion: The Colorado River eroded the broken-up soil
What type of glacier is a continuous sheet of ice and snow?
Continental Glacier
What happens when pressure builds up under a fault (crack) in our crust, near a plate boundary?
An earthquake occurs
How do glaciers change our land?
-Forms lakes
-Forms U-shaped valleys
-Creates grooved rocks
Why is the inner layer solid?
The pressure of all the other layers pushes down on the inner layer.
Deposition
How are rocks at the top of a mountain different from the ones at the bottom?
Top: jagged and large
Bottom: rounded and smaller