Learning objectives: How are alpha and beta decay represented using chemical equations?

Learning objectives: • State the factors that affect the elastic potential energy store of a spring. • Calculate the elastic potential energy store of a stretched spring. • Perform calculations involving the rearrangement of the elastic potential energy equation.

Learning Objectives: • State the factors that affect the size of a kinetic energy store of an object. • Calculate the kinetic energy store of an object. • Investigate how mass and speed affect the kinetic energy store.

Learning Objectives: • State the factors that affect the change in the gravitational potential energy store of a system. • Calculate the gravitational potential energy store of a system using the mass, gravitational field strength, and height. • To investigate how the gravitational potential energy store of different objects is affected by their mass and height.

Learning Objectives: • Describe closed and open systems and the changes to energy stores within them. • Investigate the effect of friction from different surfaces on energy dissipation and work done.

Name some objects seen in the night sky. Describe the structure of the Universe in order of size and distance away from the Earth.

State the position of the Earth and the Moon with respect to the Sun in solar and lunar eclipses. Draw simple ray diagrams of solar and lunar eclipses. Describe evidence that led to a change in the model of the Solar System.

• Name the phases of the Moon. • Explain why you see phases of the Moon.

Identify energy values for food items. Compare the energy in food with the energy needed for different activities.

Describe the motion of an object by interpreting distance–time graphs. Describe how the gradient of a distance–time graph represents the speed. Calculate the speed of an object by calculating the gradient from a distance–time graph.

Investigate whether the extension of the spring is proportional to the weight suspended from the spring.

Calculate the speed of an object, the time taken to travel a given distance and the distance travelled.

Describe the motion of an object by interpreting velocity–time graphs. Describe how the gradient of a velocity–time graph represents the acceleration. Calculate the acceleration of an object by calculating the gradient from a velocity–time graph.

Describe the difference between balanced and unbalanced forces and give examples for both. Identify and calculate resultant forces. Describe situations that are in equilibrium. Explain why the speed or direction of motion of objects can change.

Define elastic and non-elastic deformation in materials. Calculate the extension (or compression) of a material using its length and original length. State Hooke’s law and use it to calculate the force required to cause a given extension in a spring using the spring constant. Describe how elastic potential energy is stored when a material is stretched or compressed by a force. Describe force-extension graphs of elastic materials and identify the limit of proportionality. Compare the behaviour of different materials before and after the limit of proportionality.

Learning Objectives: State how energy and temperature are measured. Describe the difference between heat and temperature. Describe how energy is transferred from one object to another. Explain what is meant by thermal equilibrium.

State what conduction is. Describe how conduction happens. Describe how solids are better conductors than liquids.