Heat Transfer

Front

Process observed when an ice cube melts on a hot bench.

Back

conduction

Front

A cold metal spoon is placed in a bowl of hot soup. How is the spoon affected?

Back

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

Front

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?

Back

convection

Front

Which best explains why a hot air balloon floats?

Back

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.

Front

Which is an example of conduction?
Options:

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.

Back

A hot biscuit is warming the plate it is on.

Front

Which best describes the process of convection?

Back

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

Front

Why is the temperature cooler on cloudy days compared to sunny days?

Back

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

Front

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?

Back

between 0°C and 28°C

Front

How does convected heat keep a hot air balloon in the air?

Back

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

Front

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

Back

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