soalan sains unit 2: life processes tahun 4

7/31/2019 Soalan Sains Unit 2: Life Processes Tahun 4

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Science Year 4Unit 2: Life Processes

Name: ______________________________Class: _________________________________

Read carefully and answer the questions below.

1. When we breathe, we inhale and exhale air to the _______

A. Heart

B. LiverC. Lung

D. Kidney

2. The air that flows out contains more

A. Nitrogen

B. Carbon Dioxide

C. OxygenD. Hydrogen

3. As we _______, the chest moves in causing the chest to contract.A. Exhale

B. Inhale

C. ExpandD. Breathe

4. Human defecate __________

A. WaterB. Urine

C. Undigested materialD. Urea

5. Human ________ water and urineA. Exhale

B. Excrete

C. DefecateD. Inhale

6. What happen when humans reproduce?

A. Many people dieB. There is no future generation of human

C. Human is in danger

D. Number of people will increase


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7. Your _______ can tell if something is hot or coldA. Skin

B. Head

C. EyesD. Nose

Which one is not a healthy lifestyle?A. Eat a variety of food especially fruits and vegetables

B. Dont drink water and milk too often

C. Limit your TV timeD. Dont smoke

________ kills hundreds of people every yearA. Alligator

B. Bacteria

C. Tiger

D. Cigarretes

10. What is the dangerous chemicals in cigarretes?

A. UreaB. Oxygen

C. Nicotine

D. Nitrogen

11. Cow dug can be made into all items below EXCEPTA. FertilizerB. Bricks

C. PapersD. Plaster

12. All these type of animals lay eggs to reproduce EXCEPTA. Amphibian

B. FishC. Mammal

D. Reptiles

13. What would happen if plants and animals didn't reproduce?

A. Plants would take over the world

B. All the animals will extinct

C. All living things would just get older and olderD. Human will be very happy

14. What is the correct order for the life cycle of a frog?A. Egg - metamorph - frog - tadpole

B. Egg- tadpole - frog - metamorph

C. Baby - child - adult adolescentD. Egg- Tadpole- Metamorph- Frog


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15. Complete the order for the life cycle of a butterflyEgg- Larva- _________ - adult

A. Tadpole

B. EmbrioC. Pupa

D. Metamorph

soalan sains unit 2: life processes tahun 4

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