Length and Time

Question 1

How can you find the density of a regular solid?

Answer 1

1. Use a ruler to calculate the volume
2. Record its mass
3. Use the appropriate equation

Question 2

How can you find the density of an irregular solid?

Answer 2

1. Fill a measuring cylinder with water about half its volume and record the volume of the water in the cylinder
2. drop the solid into the water
3. Record the new volume
   4 The difference is the volume of the solid
   OR
   displacement beaker
4. Fill the beaker with water as much as you can without having any water displaced
5. Place a measuring cylinder at the spout of the beaker
6. Place the solid into the beaker
7. The measuring cylinder should collect the displaced water which is equal to the volume of the solid

Question 3

How can the accuracy of measurements be improved?

Answer 3

By repeating the experiment multiple times and calculating an average

Question 4

How can very small distances be measured

Answer 4

Using a micrometre screw gauge