Answers to AQA GCSE Levers(Physics)
Practice questions
1.Use the image below to help you to answer the following question
Explain using ideas of levers why using a wheelbarrow makes it easier to move a load such as heavy soil.
The line of action of force is a long distance from the pivot. This means that the wheelbarrow acts as a force multiplier. This makes it easier to carry the heavy load.
2. Use the image below to help you to answer the following question
Explain why using a longer oar is helpful when rowing the boat
The hollow ring on the side of the boat that the oar passes through will act as a pivot. Using a longer oar will increase the distance between the line of action of the force and the pivot, this causes a force multiplier effect.
3. Use the image below to answer the following question
Identify the pivot in the diagram above.
The pivot is marked
Absorption and Emission of EM Radiation
JJ Thomson and Plum pudding model
Ernest Rutherford and the Nuclear Model
Niels Bohr changing the Nuclear Model
Discovering the Proton and Neutron
Measuring radiation from radioactivity
Radiation types and properties
Random nature of radioactive decay
Radioactive contamination or irradiation
Hazards of contamination and irradiation
Studies on the effects of radiation on humans
Different half lives of radioactive isotopes
Nuclear Fission Chain Reaction
Writing nuclear fission equations
Drawing ray diagrams for a concave lens
Drawing Ray Diagram to produce a virtual image for a convex lens
Drawing ray diagram to produce a real image for a convex lens.
Specular and Diffuse Reflection
Seeing Coloured Objects Part 2
Viewing objects through coloured filters
Transparent, Translucent and Opaque