Year 7 Science · Unit 2 · Lesson 1
Foundation Worksheet
Learning Goals
Fill the gap
Choose the correct word from the word bank to complete each sentence. Two words will not be used.
Scientists define as anything that has and takes up space (called ). A has a fixed shape and a fixed volume. A has a fixed volume but takes the shape of its container. A has no fixed shape or volume — it spreads out to fill any container. Light and sound are forms of , so they are NOT matter.
True or False? Fix the false ones
Circle T or F for each statement. If the statement is false, rewrite it correctly on the line below.
A gas has a fixed volume but no fixed shape.
Correct it:
Air is matter because it has mass and takes up space.
Correct it:
Mass and weight are the same thing — they both measure how heavy something is.
Correct it:
Sand is a liquid because you can pour it.
Correct it:
Plasma is a fourth state of matter found in the Sun and lightning.
Correct it:
1. A student claims: "Sound is matter because you can feel it vibrate through your chest at a concert." Explain why sound is NOT matter, using the scientific definition.
2. An astronaut has a mass of 80 kg on Earth. State their mass on the Moon. Explain the difference between mass and weight in your answer.
Wrap Up
In one sentence, what was the main idea of this lesson?