Thermal Energy 2019

Railroad tracks have gaps between the rails so that they will not buckle in hot weather because of

• specific heat.

• thermal conductivity.

• thermal insulation.

• thermal expansion.

How does thermal energy flow when a student holds a piece of ice in her hand?

• Thermal energy does not flow between her hand and the ice cube.

• Thermal energy flows from her hand to the ice cube.

• Thermal energy flows back and forth between her hand and the ice cube.

• Thermal energy flows from the ice cube to her hand.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

The diagram shows a convection current. Which set of labels correctly completes the diagram?

• 1: Oil is less dense and floats on water.

  2: Water is more dense and sinks in oil.

• 1: Liquid water evaporates.

  2: Condensed water precipitates.

• 1: Animals take in oxygen for respiration.

  2: Plants take in carbon dioxide for photosynthesis.

• J 1: Warm air molecules move faster and rise.

  2: Cool air molecules move slower and sink.

Tags

NGSS.MS-PS3-4

A student put a metal pot on the stove to boil some water. The metal transferred heat to the water through

• radiation.

• insulation.

• convection.

• conduction.

The student placed Container 1 in the middle of Container 2. The student measured the temperature of the water in each container after 30 minutes. Which results MOST likely occurred?

• Water in Container 1: 70°C

  Water in Container 2: 30°C

• Water in Container 1: 60°C

  Water in Container 2: 60°C

• Water in Container 1: 40°C

  Water in Container 2: 100°C

• Water in Container 1: 20°C

  Water in Container 2: 20°C

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

A dark colored wall becomes warm when the sun shines on it. After sunset, a person standing a meter away can feel warmth from the wall. How does heat transfer from the wall to the person?

• radiation

• conduction

• convection

• insulation

The picture shows a spoon being used to stir a pan of hot soup. Which of the following spoon handles would get hot the quickest?

• a metal spoon

• a plastic spoon

• a rubber spoon

• a wooden spoon

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Place the objects below in order from greatest thermal energy to least thermal energy.

A glacier at -5°C

A cup of coffee at 70°C

A can of soda at 5°C

A swimming pool at 28°C

• cup of coffee, swimming pool, can of soda, glacier

• glacier, swimming pool, can of soda, cup of coffee

• glacier, can of soda, swimming pool, cup of coffee

• glacier, swimming pool, cup of coffee, can of soda

Tags

NGSS.MS-PS1-4

What causes your skin to feel warm when it is in the sun on a summer day?

• Particles in the atmosphere reflect energy from the Sun downward.

• Hot particles from the Sun still carry some heat when they reach your skin.

• The solar wind carries heated air from the Sun’s atmosphere to Earth’s surface.

• The Sun radiates energy that passes through space and the atmosphere to your skin.

Tags

NGSS.MS-PS4-2

Which of the following sentences best describes the process that occurs when liquid water becomes ice?

• Energy is removed from the water, so its molecules lock in place.

• Energy is removed from the water, so its molecules move apart.

• Energy is added to the water, so its molecules move apart.

• Energy is added to the water, so its molecules move more quickly.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4