Topic 1.1 Length and Time

Question 1

How is length measured?

Answer 1

Using a ruler.

Question 2

What is the unit of length?

Answer 2

Metres, m.

Question 3

How can you find the volume of a regular solid?

Answer 3

By calculation.

• Use a ruler to measure dimensions
• Use an appropriate equation to calculate volume

Question 4

How can you find the volume of an irregular solid?

Answer 4

By submersion.

• Fill a measuring cylinder with water and read initial volume
• Submerge the object (hold down if necessary) and measure final volume
• The change in volume = volume of object

Question 5

How can time be measured?

Answer 5

Using clocks or stopwatches.

Question 6

How can the accuracy of measurements be increased?

Answer 6

By taking multiple measurements and calculating an average.

Question 7

How can very small distances be measured?

Answer 7

Using a micrometer screw gauge.