Thermal Energy and Heat Transfer

Mason, Abigail, and Grace are observing a car race. They notice that the car tires heat up as the cars roll down the track. What kind of heat transfer is occurring with the tires?

• Radiation

• Absorption

• Convection

• Conduction

Evelyn and Elijah are conducting an experiment in their science class. They add a drop of colored dye to two cups, one with hot water and one with cold water. They observe that the cold water causes the drop to spread out slowly while the hot water causes the drop to spread out quickly. This is caused by...

• Difference in temperature

• Difference in density

• Difference in color

• Difference in molecular motion and energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Kinetic Theory says that...

• Particles of matter are stationary.
• All particles of matter are in constant motion; everything is always moving.

• Only some particles of matter are in motion.
• Particles of matter are in motion only at high temperatures.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

Grace noticed that when she heats a pot of water on the stove, the more thermal energy it has, the ______ its temperature and the ______ the water molecules move.

• lower, faster

• lower, slower

• higher, slower

• higher, faster

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

David, Emma, and Oliver are experimenting with different materials. They notice that a metal spoon (whose molecules are tightly packed but not too tightly!) acts like a thermal ________. On the other hand, a wooden spoon (whose molecules are loosely arranged) acts like a thermal _________.

• Conductor; Expander

• Insulator; Conductor

• Conductor; Insulator

• Expander; Insulator

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

The Sun's light and heat transfer through the vacuum of space before arriving at Earth and heating up the things on Earth. This is an example of what kind of heat transfer?

• Convection

• Radiation

• Conduction

• Absorption

Kai, Michael, and Liam are having a hot bowl of soup. They notice that after a while, the metal spoon becomes too hot to grab. This is due to what type of heat transfer?

• Radiation

• Conduction

• Convection

• Evaporation

You are swimming in a heated swimming pool, where the heating element is at the bottom of the pool. You notice that it feels as if the warm water is rising to the top of the pool instead of staying at the bottom of the pool. This is most likely caused by...

• Radiation

• Condensation
• Conduction

• Convection

Oliver, a jewelry maker, is working on resizing a metal ring for his client, Isla. Isla needs the ring to be bigger. Oliver knows that if he heats the ring up, it will get bigger. Why?

• The heat causes the metal to evaporate.

• The metal contracts when heated. This is called thermal contraction.

• The metal expands when heated. This is called thermal expansion.

• Heating the ring has no effect on its size. This is due to energy not being created or destroyed.

Tags

NGSS.MS-PS1-4

Abigail and David are observing a Japanese swordsmith creating a katana. During the process, they notice that the swordsmith heats the sword to a high temperature before submerging it in water. The water instantly starts boiling and evaporating. This is because thermal energy is always transferred from ____ to ____.

• colder object to a hotter object

• solid object to a liquid object

• liquid object to a solid object

• hotter object to a colder object

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4