What causes mountains, volcanoes, and earthquakes?
How has Earth's surface changed?
Miscellaneous
Miscellaneous
100
physical feature on Earth's surface
What is a landform?
100
outer, very thin layer of Earth
What is the crust?
100
"Supercontinent" on Earth millions of years ago
What is Pangea?
100
molten rock from the mantle
What is magma?
100
Why do footprints made on the moon last for hundreds of years?
There is no wind or water to erode the footprints.
200
process in which soil, sand, and sediment are formed
What is weathering?
200
middle layer of Earth
What is the mantle?
200
theory of how continents move over Earth's surface
What is continental drift?
200
opening in the crust through which lava flows
What is a volcano?
200
Why is the hottest center of the Earth solid?
It is solid because there is great pressure at the center of Earth.
300
process of moving sediment from one place to another
What is erosion?
300
center and hottest layer of Earth
What is the core?
300
remain or trace of past life found in the crust
What is a fossil?
300
shaking of ground from energy release in the crust
What is an earthquake?
300
What does it mean to say that Earth's plates float?
The plates float on the soft rock of the lower mantle, which has currents like water.
400
process of dropping sediment in a new location
What is deposition?
400
rigid block of crust and upper-mantle rock
What is a plate?
400
Gondwana and Laurasia were formed by this
What is continental drift?
400
an area where you would expect many earthquakes to occur
What is the Ring of Fire?
400
This mountain range formed when the pressure at the boundaries of a plate pushes a block of rock upwards.
What are the Grand Tetons?
500
downhill shifting of rock and soil because of gravity
What is mass movement?
500
place where pieces of crust move
What is a fault?
500
How is it possible that rock from some of the highest mountains has fossils?
The rock, which once must have been under the sea, was pushed by plate pressures into a mountain.
500
These are records of organisms that died long ago, and the Earth may no longer have any types of these organisms left. These also help scientists to learn about plants and animals of the past.
What are fossils?
500
This mountain range is the Earth's highest mountain range and was formed when continental plates collided. As the plates pushed together, the edges crumpled and formed into mountains.