Heat Transfer

On a hot summer day, a student dropped an ice cube onto a park bench. Within minutes, the ice cube melted. Which best describes the process the student observed?

• radiation

• combustion

• conduction

• convection

Tags

NGSS.4-PS3-2

A cold metal spoon is placed in a bowl of hot soup. Which best describes how the spoon is affected?

• The heat from the soup does not affect the temperature of the spoon.

• The heat from the soup is conducted through the spoon, making the spoon warmer.

• The cold air in the room radiates into the soup, cooling it, and keeping the spoon cool.

• The cold from the spoon is conducted into the soup, causing the soup to cool to the same temperature as the spoon.T

Tags

NGSS.4-PS3-2

Mary stands in a swimming pool and notices that the water around her feet is a lot cooler than the water near the surface. Which process causes this difference in temperature?

• convection

• evaporation

• radiation

• conduction

Tags

NGSS.4-PS3-2

Which best explains why a hot air balloon floats?

• The heated air expands to fill the balloon. The air in the balloon is now lighter than the surrounding air, causing the balloon to rise.

• The heated air expands to fill the balloon. The air in the balloon is now heavier than the surrounding air, causing the balloon to rise.

• The heated air contracts to fill the balloon. The air in the balloon is now denser than the surrounding air, causing the balloon to rise.

• The heated air contracts to fill the balloon. The air in the balloon is now lighter than the surrounding air, causing the balloon to rise.

Tags

NGSS.MS-PS1-4

Which is an example of conduction?

• Steam is rising from a cup of hot coffee.

• A hot biscuit is warming the plate it is on.

• The sun is shining through a window and warming a table.

Tags

NGSS.4-PS3-2

Which best describes the process of convection?

• Convection is the primary way heat travels through rays.

• Convection is the primary way heat travels through metals.

• Convection is the primary way heat travels through appliances.

• Convection is the primary way heat travels through liquids and gasses.

Tags

NGSS.4-PS3-2

James measured the temperature outside his house everyday for 2 months. He observed that on days the sky was mostly cloudy, the temperature was an average of 9 degrees cooler than days the sky was mostly sunny. Which best describes the reason for this pattern?

• The clouds blocked radiation from the sun, causing cooler temperatures.

• The clouds blocked conduction from the sun, causing cooler temperatures.

• The clouds allowed more radiation from the sun to reach the Earth’s surface.

• The clouds allowed more conduction from the sun to reach the Earth’s surface.

Tags

NGSS.4-PS3-2

A small ice cube at a temperature of 0°C is dropped into a glass of water at 28°C and melts. What is the temperature of the water in the glass just after the ice cube melts?

• 0°C

• between 0°C and 28°C

• 28°C

• greater than 28°C

Tags

NGSS.4-PS3-2

Which best explains how convected heat causes a hot air balloon to stay in the air?

• The heat is falling and replacing cooler air.

• The heat is produced from the rising of air currents.

• The heat is absorbed through the balloon from the sun.

• The heat is rising and circulating, causing the balloon to stay up in the air.

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Which best explains how ice melts in a person’s hand?

• The heat from a person’s hand transfers by radiation to the ice, causing it to melt.

• The heat from a person’s hand transfers by conduction to the ice, causing it to melt.

• The cool temperature of the ice transfers by radiation to a person’s hand, cooling it off.

• The cool temperature of the ice transfers by conduction to a person’s hand, cooling it off.

Tags

NGSS.4-PS3-2