1. Describe the Bohr model of an atom containing 5 electrons. How does the electron cloud model differ from the Bohr model? You can use diagrams to help your explanation.
150 words
2. Hadrons and Leptons are two groups of particles. Give details of the structural differences of the particles in each group.
150 words
3. Explain what is meant by the following terms with respect to electricity and include units where relevant:
• current
• direct current
• charge
• voltage
• resistance
• resistivity
300 words
4. The resistance in a circuit is increased and the voltage remains the same.
• What would happen to the current?
• Give one household application of changing resistance.
50 words
5. Longitudinal waves are different from transverse waves.
a) Give 2 features which are different.
b) Light is an example of a transverse wave.
Provide 2 other examples of transverse waves and 2 examples of longitudinal waves.
100 words
6. The following are examples of forces.
Describe how each one acts on a car that is parked on the road.
a) Gravity
b) Normal reaction force of the road
100words
7. Which of Newton’s laws would you need to use to push the car to the side of the road? Explain why.
50 Words
8. What force(s) would you need to overcome to move the car to the side of the road?
50 words
9. Give a definition of emf circut
50 words
