Year 7 Science · Unit 3 · Lesson 20

Unit 3 Synthesis — Forces, Energy and Investigation

Foundation Worksheet

Name

Date

Class

Learning Goals

Sort key Unit 3 concepts into the correct topic areas.
Complete a cloze passage spanning forces and energy vocabulary from the whole unit.
Recall core ideas about Newton's Laws, energy forms and pendulum investigation.

Warm Up

Sort it!

Write each concept from the pool into the correct category box below.

Inertia Kinetic energy Friction Conduction Action-reaction pairs Gravitational PE Net force Radiation Simple machines Efficiency Period Renewable energy

Forces & Newton's Laws

Energy Forms

Energy Transfer

Practical & Applications

Your Turn

Fill the gap

Choose the correct word from the word bank to complete each sentence. Two words will NOT be used.

Newton kinetic potential friction efficiency radiation inertia acceleration momentum conduction

A force is measured in the unit called the , named after the scientist who described the three laws of motion. An object's resistance to changes in its motion is called — the greater the mass, the greater this resistance. When a net force acts on an object, it produces . The energy an object has because of its movement is called energy, while stored energy due to height is called gravitational energy. Heat transfers through empty space by , which is how the Sun's warmth reaches Earth. No machine is 100% efficient because some energy is always converted to heat by and other losses. The of a machine compares useful energy output to total energy input, expressed as a percentage.

Show What You Know

1. A pendulum bob is pulled to one side and released. Describe the energy changes that happen as it swings from the highest point to the lowest point and back up again.

Recall 3 marks

2. A student suggests that a heavier pendulum bob will swing faster. Using Unit 3 content, explain why this prediction is incorrect.

Recall 2 marks

Wrap Up

Write three key ideas from Unit 3 that you think are most important to remember.