Layers of the Earth
Earth Long Ago
Solid Earth Vocabulary
The Rock Cycle
Surface Changes
100
Where is the Earth's crust the thickest?
Beneath the continents
100
A trace, mark, or remains of an organism is a _________.
Fossil
100
What is molten rock that reaches Earth's surface?
lava
100
What can Metamorphic Rock turn into?
Sedimentary Rock
100
What rapid change to Earth's surface can create new mountains?
Earthquake
200
What are the layers of Earth that are made mostly of metals?
Inner Core and Outer Core
200
How old do the remains need to be in order to be classified as a fossil?
At least 10,000 years old.
200
200 What is a solid, non-living material found in nature that has its own crystal pattern and chemical makeup?
mineral
200
Metamorphic Rocks are formed from which two forces?
Heat and pressure
200
What rapid change to Earth's surface can carry land, plants, and trees away?
Landslide or Mudslide
300
Name the four layers of the Earth in order.
Crust, Mantle, Outer Core, Inner Core
300
Name two different ways fossils form.
Imprints, casts, molds, freezing, in sap (amber) and mummification.
300
What is the slow wearing away of rock into smaller pieces?
weathering
300
What is formed when molten rock cools and hardens?
Igneous Rock
300
What is the slow change to Earth's surface that can cause canyons to form and move soil from one place to another?
Erosion
400
What is the Inner Core's temperature often compared to?
The heat of the sun
400
Name a marine fossil and explain at least one characteristic that you could use to identify this fossil.
Answers will vary.
400
What are the preserved traces and remains of an organism that lived on land long ago?
terrestrial fossils
400
What is formed when heat and pressure are added to an Igneous Rock?
Metamorphic Rock
400
What is the slow change to Earth's surface that breaks rocks into smaller pieces and can wear down mountains?
Weathering
500
What is the molten rock inside the Earth's mantle often called?
Magma
500
What can you conclude if you find numerous marine fossils in an area that is now forest?
This area may have once been covered with water.
500
What are bits of sand, rocks, soil, and the remains of once-living things?
sediments
500
What is created when weathering happens to a Sedimentary Rock?
The rock may break into sediments.
500
What is the slow change to Earth's surface that can create beaches by moving sediments with wind, water, and ice?
Deposition
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