Answers NC-Physical ScienceConduction

Conduction Answers

0 verified answers

Free Preview

How does an increase in thermal energy affect molecules?

They stop moving.

They begin to vibrate more.

They decrease in temperature.

They lose kinetic energy.

Free Preview

When Object 1 came into contact with Object 2, Object 2 got warmer. What can be concluded about the objects before they came into contact with each other?

Object 2 did not have thermal energy.

Object 1 had faster-moving particles.

Object 1 had less thermal energy.

Object 2 had fewer particles.

Conduction can occur within a single substance, but parts of the substance must have which property?

different temperatures

different textures

different particle sizes

different colors

How does a foam-filled winter coat help keep a person warm?

It slows down the transfer of thermal energy from outside to inside the coat.

It slows down the transfer of thermal energy from inside to outside the coat.

It speeds up the transfer of thermal energy from outside to inside the coat.

It speeds up the transfer of thermal energy from inside to outside the coat.

Which contains the particles that are vibrating fastest?

boiling water

frozen water

room-temperature water

cold tap water

Which demonstrates conduction?

a marshmallow held over a fire

ice cream melting in the sun

cool feet walking across a hot pavement

a bulb releasing light energy

Alana drew diagrams to show how particles in a spoon move before and after the spoon is placed in hot liquid. Which best explains how to correct Alana’s error?

Make the particles in both diagrams larger.

Show more movement in the “Before” diagram.

Add more particles to the “After” diagram.

Switch the labels on the diagrams.

Earl is using his hands to hold a metal pan 10 centimeters above a hot burner. How can this scenario be changed to demonstrate conduction between the pan and the burner?

increase the temperature of the burner

use a glass pan instead of a metal pan

use foam potholders to hold the pan

touch the pan to the burner

How do the metal aluminum coils in an air conditioner help keep a house cool?

They insulate the house from outside thermal energy.

They conduct thermal energy from inside the house and release it outside the house.

They insulate the surrounding air from indoor thermal energy.

They conduct thermal energy from outside the house and release it inside the house.

Which explains why conduction is unlikely when ice is placed on a freezer shelf?

There is no direct contact.

The ice is too cold.

The shelf acts as an insulator.

The ice and shelf are the same temperature.

Did you find these answers helpful?

Conduction Answers

More from this Course

TRY EDGENUITY HACKS