1. Approximately, how far does sound travel in 1 second?

2. How does it help you to be seen when you wear a 'Hi-Viz' yellow jacket at night?

3. Alice put four objects on to a tray and slowly tipped it up.
The pencil sharpener slid first. The matchbox slid next. Then the scissors. The rubber slid last. Which object had the least friction between it and the tray?

4. The picture shows a submarine which is not moving.

There are two forces on the submarine: Upthrust (X) and gravity (Y) Which force is bigger?

5. Which travels faster - sound or light?

6. The diagram below shows a light ray passing through a glass block.

This digram represents which physical process?

7. The circuit shows two bulbs and a switch.
Both bulbs are on.

Is the switch OPEN or CLOSED?

8. What is the metric unit for mass?

9. Which of the following is not a force

10. The diagram shows a blue ball hanging from a string.

Which force arrow best represents the force of the string pulling on the ball?