PS4 Science – Full Practice Paper

Progression Step 4 · Years 7–9

50 mins · 42 marks · Both

Practice only – not official WJEC past papers. Use alongside your school teaching and revision guides.

Show working for calculations. About 50 minutes.

Question 1[4 marks]
Difference between an atom and a molecule.
Question 2[5 marks]
Word equation for respiration. Where does it mainly occur in cells?
Question 3[5 marks]
Describe solid, liquid and gas in terms of particle arrangement and movement.
Question 4[5 marks]
What is a balanced diet? Name the main food groups.
Question 5[5 marks]
Explain the difference between weight and mass.
Question 6[6 marks]
Describe how to test a leaf for starch and what a positive result shows.
Question 7[6 marks]
Forces: a 3 kg object accelerates at 2 m/s². Calculate the force.
Question 8[6 marks]
Explain one human impact on an ecosystem and how it might be reduced.