Science Energy

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-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

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-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

What is the definition of heat?

• Thermal energy that is transferred from one object to another

• Heat being transferred between two objects touching one another

• Heat being transferred through materials that flow

• Heat transferred by electromagnetic waves

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

How is heat transferred in conduction?

• Through electromagnetic waves

• Between two objects touching one another

• Through materials that flow

• By increasing temperature

Tags

NGSS.MS-PS1-4

What is convection?

• Heat being transferred through materials that flow

• Heat transferred by electromagnetic waves

• Easily allows a flow of heat

• Resists or does not allow a flow of heat

Tags

NGSS.MS-PS3-3

NGSS.MS-PS3-4

Which method of heat transfer involves electromagnetic waves?

• Conduction

• Convection

• Radiation

• Thermal expansion