Conduction

Question 1

What is conduction?

Answer 1

Conduction is how energy is transferred in a solid, from one end to another.

Question 2

Why can’t conduction occur in liquids and gases?

Answer 2

The particles aren’t close enough to vibrate next to each other, transferring energy.

Question 3

What is the method for iron and glass rod conductivity experiment?

Answer 3

1.) Use 5g of vaseline to stick 2 drawing on each rod.
2.) Set up two bunsen burners safetly (un lit)
3.) Set up rod 10cm above each bunsen burner using clamp and stand.
4.) Light bunsen and start the timer
5.) Record the time it takes drawing pin to fall off iron and glass rod.
Repeat 4 times.

Question 4

Why do you repeat the experiment 4 times?

Answer 4

To make results more reliable

Question 5

What is the independent variable in conductivity experiment?

Answer 5

Type of rod

Question 6

What is the dependent variable in conductivity experiment?

Answer 6

Speed of conduction

Time for vaseline to melt and drawing pin to drop

Question 7

What are the control variables in conductivity experiment?

Give 5 examples

Answer 7

• Length of rod
• Type of flame
• Mass of vaseline
• Mass of drawing pin
• Distance between flame and rod

Question 8

What is the best metal, thermal conductor?

Answer 8

Copper is the best thermal conductor

Question 9

Give 3 poor thermal conductors

Answer 9

• Wood
• Glass
• Heatproof mat

Question 10

In conduction experiment, what happens to the wasted energy?

Answer 10

• It is transferred to the surroundings

Question 11

What is put under the bunsen burner to protect table?

Answer 11

Heat proof mat.

Question 12

What is meant by “thermal conductivity”?

Answer 12

How good something is at transferring thermal energy .

Question 13

What is meant by thermal equillibrium?

Answer 13

When a material is the same temperature