Thermal Energy and Particles

What happens to the kinetic energy of particles as temperature INCREASE?

• The kinetic energy of particles remains the SAME.

• The kinetic energy of particles DECREASES.

• The kinetic energy of particles INCREASES.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The more kinetic energy a particle has, the __________ it will move

• slower

• faster

Tags

NGSS.MS-PS3-1

What happens to particles in a sample of air when the air is COOLED?

• particles move SLOWER

• particles move FASTER

Tags

NGSS.MS-PS1-4

What happened to the balloon when the bottle with air was placed in cold water?

• The balloon inflated (got bigger)

• The balloon deflated (got smaller)

• Nothing happened

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Why does the liquid in a thermometer go up on a HOT day?

• Space between the molecules gets SMALLER

• Spaces between the molecules gets LARGER

• Spaces between the atoms doesn't change

Tags

NGSS.MS-PS1-4

How are molecules affected when heat is added?

• There is no change.

• They vibrate faster.

• They start vibrating faster and then stop.

• They vibrate slower.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

If more lines attached to the molecule mean the molecule is moving more, which box has molecules with more kinetic energy?

• The box to the right

• The box to the left

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

NGSS.MS-PS3-5

In our water and food coloring lab, why did the food coloring move more quickly throughout the hot water than it did in the cold water?

• The hot water has more kinetic energy

• Hot water has more molecules to move the food coloring

• Cold water has more thermal energy than the hot

• The cold water has more kinetic energy

Tags

NGSS.MS-PS1-4

A student heats 25 mL of water from 20°C to 96°C in a glass beaker. The model represents the motion of the water molecules during heating.

Why do some of the particles have longer arrows than other particles?

• The arrows represent the speed of the particles. The shorter the arrow the slower the speed.

• The arrows represent the length of the tail on the molecule. The longer the arrow, the longer the tail.

• The arrows represent which way the particles should go if they want to become super particles.

Tags

NGSS.MS-PS1-4

As particles are exposed to COLDER temperatures they _____

• speed up
• slow down
• stay the same

Tags

NGSS.MS-PS1-4