Energy Review (6th-grade science)

A student put a cube of butter on a metal rod. Then he placed the other end of the rod in a beaker of hot water. The setup for the investigation is shown below.

The butter melted in ten minutes. What type of energy did the metal rod conduct to the butter?

• thermal

• mechanical

• electromagnetic

• electrical

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

Mary used a thermometer to test the air temperature at four points near a lit bulb. She recorded her data in the table.

Which BEST explains why the air closest to the bulb was warmest?

• The bulb was insulated.

• The bulb gave off light.

• The bulb radiated heat.

• The bulb conducted electricity.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Use the diagram to answer the question that follows.

Which process is responsible for moving hot air from inside the stove to the outside?

• convection

• reflection

• refraction

• conduction

Tags

NGSS.MS-PS1-4

Jennifer is in a room that has an air temperature of 25ºC (77ºF). Before pouring cold water into a glass, she notices that the ice in the pitcher is melting.

What would be the BEST way for Jennifer to describe how thermal energy is being transferred?

• Heat moves from the ice to the water.

• Cold moves from the ice to the water.

• Heat moves from the air to the water.

• Cold moves from the water to the room.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

In an investigation, water in an Erlenmeyer flask is placed on a hot plate.

As the water is heated, the cooler, denser water at the surface sinks and pushes the warmer water to the top. What do the arrows in the drawing MOST likely represent?

• phase changes

• convection currents

• electromagnetic radiation

• energy transfer by conduction

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Elaine investigated how well different materials conducted heat. She had samples of metal, wood, plastic, and rubber that were each the same size. Elaine put each sample in boiling water for five minutes and then measured its temperature.

Which material is the BEST conductor of heat?

• metal

• wood

• plastic

• rubber

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

The diagram shows a metal strip connected by wires to a battery and light bulb.

Which property of the metal is being tested with this setup?

• luster

• density

• elasticity

• conductivity

The picture below shows a pencil in water.

Which term best describes the wave behavior as light moves from air to water in this setup?

• absorption

• reflection

• refraction

• scattering

Tags

NGSS.MS-PS4-2

When a frying pan is placed on an electric stove top, heat energy is transferred from the burner to the pan by ____________.

• conduction

• convection

• radiation

• exclusion

Which of the following heat exchange processes involves the collision of particles?

• conduction

• convection

• radiation

• insulation

Tags

NGSS.MS-PS2-1