Earth's Features Unit 3 Science Review

How does a fossil form?

• Water fills up a puddle and freezes there.

• An organism dies and is covered with sediment that turns into rock.

• A seashell is buried in the sand on the beach.

• A footprint is left in the mud and the mud hardens.

How does a sedimentary rock form?

• Sediment sinks and builds up in water, compacts under more sediment, and cements over time

• Under extreme cold and dry temperatures, solid layers of sedimentary rock can form.

• When sediment is subjected to high heat and pressure, a sedimentary rock is formed.

• A volcano erupts lava and the lava spills over the sides of the volcano, cools, and hardens into sedimentary rock.

Over time, rock layer becomes ______________________________

• Darker in color.

• Thicker as sediment continues to build up.

• Thinner as weathering and erosion take place.

• Lighter in color.

Geologists are scientists who study rocks. Geologists observe rock layers to infer ________________________________.

• The order of past events

• Which rock layer is the heaviest

• Which rock layer is the lightest.

• The texture of the rocks.

Tags

NGSS.MS-ESS1-4

True or False: If there are different sedimentary rock layers in a place then the environment in that place has changed.

• True

• False

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-2

Order the following rock layers from oldest to youngest:

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NGSS.MS-ESS1-4

How do geologists make inferences about past environments?

• Geologists use the weather patterns of the area.

• Geologists use observations of plants and wildlife.

• Geologists observe historic buildings

• Geologists use observation of rocks and fossils.

Tags

NGSS.MS-ESS1-4

NGSS.MS-ESS2-3

NGSS.MS-LS4-1

Which of the following naturally erode rocks?

• Wind

• Water

• Animals

• Plants

• Ice

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NGSS.MS-ESS2-2

NGSS.MS-ESS2-4

Which of the following effects how much rock is eroded by water? Select two.

• Speed of water.

• Direction the water is going.

• Time the water flows.

• The temperature of the water.

How can I reduce the impacts of natural Earth processes?

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NGSS.MS-ESS3-2

NGSS.MS-ESS3-4