Earth and Space Science Part 1

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Earth and Space SciencePart 1

• Abney Elementary
• K. Delaup

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What are examples of the bodies of water found on
Earth?

• There are bodies of water found on Earth. They
  include oceans, lakes, rivers, and streams.

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What is an ocean?

• Oceans are vast bodies of salt water that covers
  almost three fourths of the earth's surface.

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What is a lake?

• A lake is a large inland body of fresh or salt
  water.

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What is a river?

• A river is a large natural stream of water
  emptying into an ocean, lake, or other body of
  water.

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What is a stream?

• A stream is a steady flow of water a small river.

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How many layers make up the Earth?

• The Earth is made up of three layers crust,
  mantle, and core

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What is the first layer of the Earth?

• The crust is the layer of Earth we walk on. It
  is the thinnest layer. The crust features
  include mountains, valleys, plains, plateaus, and
  the ocean floor.

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What is the name of the thickest layer of our
planet?

• The mantle(middle layer) is the thickest layer of
  the planet. Most of the mantle is solid rock.
  Some of the mantle is partly melted rock that
  flows like thick liquid.

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What is the name of the layer deep inside the
Earth?

• Deep inside Earth is the core. The core is a
  dense ball made mostly of two metals, iron and
  nickel.

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What is Earth made up of?

• Earth is made up of materials such as rocks,
  minerals, and soil.

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What are rocks made of?

• Rocks are made of minerals.

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What is soil made of?

• Soil consists of rock and mineral particles mixed
  with organic matter.

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What is a mineral?

• Minerals are solid, inorganic (not living)
  substances that are found in and on earth.
• Example of minerals are gold silver, copper, and
  gems. (Gems are cut and polished minerals.)

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How do we test minerals?

• Minerals undergo a hardness test to see how
  easily they scratch.

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What is a fossil?

• A fossil is the preserved remains of a plant,
  animal or other organism that lived on Earth long
  ago.

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How do fossils form?

• Most fossils form when an organism dies and is
  quickly buried by sediments. Eventually the
  sediments harden to form rocks. As time goes by,
  sediments form layers.

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Are the oldest rocks always found at the bottom
layers of the crust?

• Sometimes the oldest rocks are not always at the
  bottom of the stack. Sometimes movement in
  Earths crust can twist or turn over stacks of
  layers so the oldest rocks might not be at the
  bottom.

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What is a trace fossil?

• A trace fossil is the preserved remains of the
  activity of an animal that lived long ago.
  Tracks, burrows, droppings, and worm holes are
  all trace fossils.

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What does fossils do?

• Fossils tell what the Earth was like long ago.

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What do fossils tell?

• Fossils tell what animals looked like long ago.
  Scientists study fossils and compare them to
  living things now.

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What else do fossils tell?

• Fossils tell how an animal moved. Fossil
  footprints can show how an animal walked.
• Example A T-Rex has four legs. The front legs
  were much shorter, so the animal probably walked
  on only two legs.

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The End