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Heat transfer & molecular motion

Authored by Jennifer Nemet

Science

6th - 8th Grade

NGSS covered

Used 6+ times

Heat transfer & molecular motion
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16 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Hot coffee is stirred with a spoon; the spoon gets hot due to

conduction
convection
radiation

2.

MULTIPLE CHOICE QUESTION

20 sec • 1 pt

"Lava lamps" contain colored liquids. These liquids form globs that rise to the top due to

conduction
convection
radiation

3.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

Conduction can only occur between two objects when –

one object is less dense than the other.
both objects are in physical contact with each other.
one of the objects is made of a metal.
both objects are exactly the same temperature.

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

In this demonstration, what causes the balloon to expand?

The heat from the room causes the balloon to expand.
The heat from the hot plate heats the glass and the air inside it expands.
The balloon spontaneously blows up to try to escape the bottle. 
I don't know.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Media Image

Which type of motion in the figure best represents the movement of gas particles?

Motion 1

Motion 2

Motion 3

Motion 4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to matter as its temperature increases?

The average kinetic energy of its particles decreases

The average thermal energy of its particles decreases

The particles gain kinetic energy

The particles lose potential energy

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The more energy that particles have, the ___ they move.

slower

faster

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