OpenSciEd 6.2: Thermal Energy

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Which of the following images would represent the plastic cup?

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NGSS.MS-PS1-3

Which one of these cups is a closed system (no matter can get in or out)?

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How do water particles CHANGE when they evaporate?

• They start moving faster

• They get smaller

• They change color

• They disappear

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which of the following images would represent the water in the cup?

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Tags

NGSS.MS-PS1-4

Which of the following images would represent some of the water particles evaporating?

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Tags

NGSS.MS-ESS2-4

NGSS.MS-PS1-4

The gold marbles represent water particles. The colorful marbles represent plastic particles. What will eventually happen to the water particles if there is no lid?

• Since this represents and open system, the water particles will eventually evaporate.

• Since this represents a closed system, the water particles will stay in the cup.

• There is enought space for the water particles to slip through the side of the plastic particles.

Tags

NGSS.MS-ESS2-4

Which one of these containers represents an OPEN system (matter can get in and out)?

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What does the blue particle that's up high in the circle represent?

• The blue circle up high represents a water molecule that has evaporated.

• The blue circle up high represents a molecule of air that is not water.

• The blue circle up high represents a water molecule that has turned to ice.

Tags

NGSS.MS-ESS2-4

The independent variable is the ONE thing you change in an experiment. Why do you only change on thing at a time in an experiment?

• Because you want to know what is responsible for the change in your investigation.

• Because it's too expensive to test more than one thing at a time.

Tags

NGSS.MS-PS2-2