Rusting Science Year 5

1. Antara kumpulan berikut, yang manakah mempunyai kesemua objek boleh berkarat?

Which of the following groups consist of rusty objects?

• Paku, anak kunci, papan dan guli

  nail, key, board and marble

• Paku, guli, jarum dan skru

  nail, marble. needle and screw

• Paku, anak kunci, jarum dan skru

  nail, key, needle and screw

• Guli gelang getah dan baju

  Marble. rubber band and clothes

Rajah menunjukkan sebuah basikal.

Diagram shows a bicycle.

2. Bahagian manakah akan berkarat jika terdedah kepada air dan udara?

Which parts will get rusty if they are exposed to the water and air?

• J, L and M

• K and M

• L and M

• J and L

Rajah menunjukkan satu penyiasatan mengenai pengaratan.

Diagram shows an investigation about rusting.

R - Paku besi akan berkarat

The iron nail will rust

S - Paku besi tidak akan berkarat

The iron nail not rust

T - Paku besi akan terapung di atas air

The iron nail will float on the water

U- Palm besi akan bertukar wama

The iron nail will change the colour

Antara berikut yang manakah akan berlaku selepas satu hari?

Which of the following occur after a day?

• R and T

• S and T

• R and U

• S and U

4. Paku di dalam bekas yang manakah paling cepat berkarat?

In which container the nails rust fastest?

• A

• B

• C

• D

5. Diagram shows an object.

Which of the following objects can be

grouped in the same group as the object

above?

• Slippers

• Rattan basket

• Thumb tack

• Garbage plastic

6.Table shows the results of an investigation

by a group of Year 4 Bakti pupils.

What is the conclusion that can be made

from the results of this investigation?

• Rusty objects are made of iron.

• Non-rusty objects are made of iron.

• Rusty objects are brownish colour.

• Rusty objects are made of plants.

What is the disease caused by rusting?

• High blood pressure

• Diabetes

• Tetanus

• Cancer

8. Which of the following objects will rust and

do not rust?

• A

• B

• C

• D

9.An experiment has been carried out by a group of pupils. The results of the

experiment are recorded in Table 2.

What can be concluded from this experiment?

• Nail X did not rust because exposed to the air and water.

• Nail Y rusts because exposed to the air and water

• Nail X did not rust because exposed to the oil layer.

• Nail Z did not rust because exposed to water.

10.What are the factors that cause rust?

• Water and air

• Water and fire

• Water vapour and gas

• Oil and grease