Year 8 speed, density and compound units test to download as PDF

This Year 8 speed, density and compound units test lasts 45 minutes and is marked out of 20. It covers the whole chapter for pupils aged 12-13, and the full answers are on a separate page.

⏱️ Duration : 45 min
🎯 Total : 20 marks
❓ 5 questions

Mark/20

Question 1 – Speed
Answer all parts. Show your working.
1. A car travels 135 km in 1.5 hours. Find its average speed. (1 mark)
2. How far does a cyclist travel in 2 hours 30 minutes at 14 km/h? (2 marks)
3. Convert 54 km/h to m/s. (1 mark)
Question 2 – Density
Use \(\text{density}=\dfrac{\text{mass}}{\text{volume}}\).
1. A block of wood has mass 360 g and volume 450 cm³. Find its density. (1 mark)
2. Will it float in water (density 1 g/cm³)? (1 mark)
3. A metal has density 7.8 g/cm³. Find the mass of 250 cm³. (2 marks)
Question 3 – Average speed
A runner jogs 6 km in 40 minutes and then walks 2 km in 30 minutes.
1. Find the total time in hours. (1 mark)
2. Find the average speed for the whole run, in km/h. (2 marks)
3. Find the speed of the walking part in km/h. (1 mark)
Question 4 – Problem: the swimming pool
A swimming pool is 20 m long, 8 m wide and 1.5 m deep. A pump fills it at 4 000 litres per minute. (1 m³ = 1 000 litres.)
1. Find the volume of the pool in m³ and litres. (2 marks)
2. How long does it take to fill? (2 marks)
Question 5 – Problem: the road trip
Jade drives 90 miles in 1 h 30 min and then 120 miles in 2 hours.
1. Find her speed for each part. (2 marks)
2. Find her average speed for the whole journey. (2 marks)

How to use this Year 8 speed, density and compound units test

First, revise with the speed, density and compound units lesson and the worksheet. Then sit the test in one go, with a timer set to 45 minutes. After that, mark your work with the speed, density and compound units test answers. If you lose marks on a question, redo it the next day without help.

Finally, you can download this Year 8 speed, density and compound units test as a PDF and print it like a real exam paper. Moreover, all the pages of this chapter work together, so you can move between them at any time. For example, many pupils read the lesson on Monday, practise on Wednesday and test themselves on Friday.