Fossils
Rock Layers
Erosion
Fair Tests
100

True or False: Fossils are made quickly.

False

100

True or False: Environments stay the same over millions of years.

False

100

Water and other natural forces can __________ land and rocks.

Move, break, change, erode

100

The part of the experiment you change is called the ____________.

variable

200

Fossils are formed when layers of _________ press down on bones or other hard remains.

Sediment

200

Write the letter of the oldest rock layer.

A

200

True or False: Erosion happens slowly over millions of years.

True

200

The parts of the experiment you keep the same are called the ____________.

constants

300
What inference could you make about the ancient environment if you found a lot of fish and shell fossils in the area?

It was an ocean/water environment

300

Which is newer, limestone or shale?

Shale

300

What is one factor that can change the speed of water erosion?

Amount of time/speed of water/amount of water

300

Why can you only change one variable in an experiment?

To make the test fair/get accurate results

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