To find out if wind affects the rate of evaporation

To find out if temperature affects the rate of evaporation

To find out if exposed surface area affects the rate of evaporation

To find out whether the material of the handkerchief affects the rate of evaporation

The rod was made of steel.

The rod was made of copper.

The rod was not long enough.

(1)  The wires were coiled in the wrong direction.

Frictional force and gravitational force

Frictional force and magnetic force

Magnetic force and gravitational force

Magnetic force and frictional force

1

2

3

4

1

2

3

4

To find out if boiling water has a higher temperature than tap water.

To find out if the metal warms up faster in tap water or in boiling water.

To find out if heat travels from a hotter substance to a colder substance.

To find out if water can be transferred from one end of the rod to the other.

A

B

C

D

1

2

3

4

200 cm³

500 cm³

600 cm³

800 cm³

1

2

3

4

A and B

B and C

A and C

B and D

A only

B and D only

C and D only

A, C and D only

A and C only

B and D only

A and B only

C and D only