# Transfer Of Thermal Energy - Conduction

10 Questions | Total Attempts: 1693

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Online Quiz - Transfer of Thermal Energy & Conduction

• 1.
When you put your hand in a cup of ice water, your hand feels cold. This is because ___________.
• A.

Your hand gains the coldness from the ice water

• B.

Your hand loses thermal energy to the ice water

• C.

The ice water loses thermal energy to your hand

• D.

The ice water loses the coldness to your hand

• 2.
Which of the following is the poorest conductor of thermal energy?
• A.

Vacuum

• B.

Air

• C.

Water

• D.

Wool

• 3.
When you stand in bare feet with one foot on a stone floor and the other on a carpet, the stone floor feels colder than the carpet. The most likely explanation is that ________________.
• A.

Air is unable to circulate through the carpet fibres

• B.

More energy flows from the carpet to your foot than from the stone floor to your foot

• C.

More energy flows from your foot to the stone floor than to the carpet

• D.

the stone floor is at a lower temperature than the carpet

• 4.
When one end of a rod is heated, thermal energy is transferred down the rod by _________ .
• A.

Hot molecules moving along the rod

• B.

Hot molecules changing places with the cooler ones

• C.

The air around the rod moves after being heated

• D.

The transfer of kinetic energy from one molecule to the next

• 5.
An unlit match is held near to an extremely hot Bunsen flame as shown in the figure. The match does not get hot enough to light because _________.
• A.

A match can only be lit by striking it on a rough surface

• B.

The flame is not hot enough

• C.

Air is a bad conductor of thermal energy

• D.

The flame does not radiate any thermal energy sideways

• 6.
An experiment is carried as shown in the diagram. Why does the ice take a long time to melt, even though the water at the top of the tube is boiling?
• A.

Water is a poor conductor of thermal energy.

• B.

The gauze prevents the thermal energy from reaching the ice.

• C.

Ice is a poor conductor of thermal energy.

• D.

The test tube conducts the thermal energy away from the ice.

• 7.
A plastic ruler feels warmer than a metal ruler because ___________.
• A.

The metal ruler conducts thermal energy away from your hand faster

• B.

The molecules in the metal ruler are less energetic

• C.

The metal ruler has a shinier surface

• D.

The metal ruler is a worse radiator of thermal energy

• 8.
When we heat a beaker on a tripod, a gauze is usually placed on the tripod. This is because the gauze ___________.
• A.

Spreads the thermal energy evenly over the base of the beaker

• B.

Increases the rate of heating by becoming red hot itself

• C.

Increases the rate of heating by conducting the heat faster

• D.

Concentrates the thermal energy at one part of the base of the beaker

• 9.
Thermal conduction in metals differs from thermal conduction in insulators. The reason for this is that, in metals, thermal energy can be transferred by _________.
• A.

Positive ions

• B.

Free electrons

• C.

Infra-red rays

• D.

Molecular vibrations

• 10.
A hot object warms a cool object. Which of the following statements about the relationship between temperature and thermal energy in this case is correct?
• A.

Temperature flows from the hot object to the cold object.

• B.

Temperature flows from the object with the most thermal energy to the object with the least thermal energy.

• C.

The object with the most thermal energy always has the highest temperature.

• D.

Energy flows from the object with the highest temperature to the object with the lowest temperature.

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