Scientific Models

Which model could be used to show how rocks are changed by tumbling in a fast river?

• Using a hammer to smash some rocks.

• Using a water bottle to slowly drip water on some rocks.

• Shaking rocks in a water bottle or container vigorously.

• Hitting two rocks together.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

Some students used balls and a flashlight to model the Sun, the Earth and the Moon. What does this model NOT demonstrate?

• The direction in which each object moves.

• The amount of light Earth gets from the Sun.

• The relative sizes of the Earth, Moon, and Sun.

• The position of each object relative to others.

Tags

NGSS.MS-ESS1-1

Lobsters have claws that allow them to grab and hold on to their food. Which of the following could be used to model the lobster’s claws?

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Tags

NGSS.MS-ETS1-4

A student wanted to make a model of a volcano. He put sand in the bottom of a shoe box and added a clay model of a volcano. What is the best way to model how volcanic eruptions change Earth’s surface?

• Shake the box to move the sand around.

• Empty a beaker of water over the volcano.

• Place some rocks in the sand around the volcano.

• Pour melted wax in the box and let it cool and harden.

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-2

A student made a model of the water cycle. She put some sand on one side of a pan and some water on the other side. What could they use to model how the sun causes ocean waters to evaporate?

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Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

What can this model help us understand?

• What it feels like to breathe in and breathe out.

• How our lungs inflate and deflate when we breathe in and breathe out.

• The location of the lungs in our body.

• How fish breathe under water.

Which of these is NOT a scientific model?

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