Free Printable Grade 9 Revision

Worksheets

Grade 9 Revision

Total questions: 15

Worksheet time: 27mins

Name

Class

Date

$\theta1\ =35\degree,\ \theta2=25\degree$ What is the refractive index, n, of water?

1.37

1.36

1.35

1.34

A tunnel has a length of 50 km. A car takes 20 min to travel between the two ends of the tunnel. What is the average speed of the car?

2.5 km / h

16.6 km / h

150 km / h

1000 km / h

A small steel ball is dropped from a low balcony. Ignoring air resistance, which statement describes its motion?

It falls with decreasing acceleration.

It falls with constant acceleration.

It falls with decreasing speed.

It falls with constant speed.

Which speed/ time graph applies to an object at rest?

What is electrical energy converted into when a drill is used?

Kinetic energy

Sound

Heat

All of the above

What is the correct equation for gravitational potential energy

m x g x h

m x g / h

m x h / g

Electricity can be obtained from different energy resources. Which energy resource is used to obtain electricity without producing heat to boil water?

coal

geothermal

hydroelectric

nuclear

What is the volume of Object X?

10.0 cm³

15.0 cm³

20.0 cm³

25.0 cm³

Which box has a higher density?

Box A

Box B

cannot be determined

they are the same

10.

What is the anticlockwise moment acting on this crane?

80,000Nm

100,000Nm

120,000Nm

140,000Nm

11.

A seesaw is unbalanced with two people of different masses sitting equal distances from the center. Which of the following will result in equilibrium?

The larger person moving further away from the center.

Moving the smaller person closer to the center.

Moving the smaller person further from the center.

Making the larger person do nothing.

12.

Four objects are each acted on by only two forces, as shown. Which object is in equilibrium?

13.

A man sees a stone at the bottom of a pool of water. Which path could be taken by light from the stone to the man?

14.

An object 5.0 cm high is placed 2.0 cm from a converging (convex) lens which is being used as a magnifying glass. The image produced is 6.0 cm from the lens and is 15 cm high.
What is the focal length of the lens?

2.0cm

3.0cm

4.0cm

6.0cm

15.

After the train passed, the pitch of the train whistle became lower. This change in sound would be represented by what change in the diagram above?

The distance represented by C would increase.

The distance represented by C would decrease.

The distance represented by D would increase.

The distance represented by D would decrease.

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Grade 9 Revision

Total questions: 15

Worksheet time: 27mins

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