Transfer of heat energy part 2

When a block of iron is heated, ______________________________

• it exerts a pulling force

• its length increases

• its surface area decreases

• its temperature falls

Tags

NGSS.MS-PS1-4

When a bimetallic strip is heated, _____________________________.

• both metals contract at the same rate

• both metals expand at different rates

• both metals expand at the same rate

• one metal expands while the other contracts

When metal is heated, its _________________ remains unchanged.

• density

• mass

• surface area

• volume

Tags

NGSS.MS-PS1-5

How much a substance expands depends on whether it is a solid, a liquid or a gas. Which  of the following shows the correct order of expansion (from the least to the most)?

• gas, liquid, solid

• liquid, solid, gas

• solid, gas, liquid

• solid, liquid, gas

Tags

NGSS.MS-PS1-4

The diagram below shows the temperature on land and at sea at night.

Which statement is not correct?

• Land loses heat to surrounding faster than the sea.

• Air flows from the sea towards the land.

• Air above sea is warmer than air above the land.

• A convection current is set up.

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

Which method of thermal energy transfer makes use of the concept of density change?

• conduction only

• convection only

• radiation only

• conduction, convection and radiation