Show:
Changes to Earth
Mountains, Quakes, Volcanoes
Moving Continents
Landforms
Misc.
100
What is continental drift?
The movement of the plates of the earth.
100
What is the state formed by volcanoes?
Hawaii
100
What is the name of the one continent before they split apart?
Pangea
100
What is an island?
A piece of land surrounded by land on all sides
100
What is the layer in the absolute center of the earth?
Core
200
What is the remains of an animal or plant from long ago
Fossils
200
What is a mountain formed by lava and ash?
A volcano
200
What are the lines where plates come together called?
Faults
200
Name a peninsula in the US.
Florida, "thumb of Wisconsin"
200
Large mounds of sand are called __________
Dunes
300
Name the continents
North America, South America, Asia, Europe, Australia, Antarctica
300
Molten rock from the earth's mantle
Magma
300
What is the theory called that produced the seven continents?
Continental drift
300
A smaller river or stream that runs into a bigger river is called a ________________.
Tributary
300
How can an island "appear"?
The lava of the volcano flows out above the surface of the water.
400
How do fossils support the theory of continental drift?
Fossils of animals found on far away continents are similar
400
What is the core made of?
Both solid and molten iron
400
Glaciers cover most of what two areas?
Greenland and Antarctica
400
What is mass movement
It is the downhill movement of sediment due to gravity
400
If the mantle were solid rock, why would we not have Hawaii?
Hawaii was formed by volcanoes, which are made with lava flowing out and cooling. If there was no lava, there would be no islands.
500
200 million years ago the continent split in two. Name one of the pieces
Laurasia or Gondwana
500
What is the name of the machine that measures earthquakes?
Seismograph
500
Are fossils still being formed today? Explain
Fossils ARE being formed today. If an animal dies, and is covered by layers of dirt, it can become a fossil for future generations to uncover.
500
What is the difference between weathering and erosion?
Weathering just breaks down sediment. Erosion moves it.
500
What is the difference between magma and lava?
Magma is inside the earth, lava is outside.