Practice Quiz 4 – Online Classroom Portal

Science Skills – Grade 4 Practice Quiz 4

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1. Pure water boils at __________ degrees Celsius.

A. 200

B. 10

C. 100

D. 0

2. Astronauts take their own supply of ____________ when going into outer space.

A. carbon dioxide

B. oxygen

C. nitrogen

D. water vapour

3. At the side of our tongue, we taste mainly:

A. bitter

B. sweet

C. sour

D. salt

4. Which substance cannot be removed by filtering water?

A. leaves

B. germs

C. rocks

D. broken sticks

5. Which organ do you use to identify chemicals?

A. skin

B. nose

C. tongue

D. eye

6. A bird flying is an example of _________ friction.

A. sliding

B. rolling

C. fluid

D. motion

7. Work is being done when;

A. no movement takes place

B. a force is applied to an object

C. when something moves from on e place to another

D. a lot of effort is used

8. If you live without water for six days your body will become___________

A. contaminated

B. sediment

C. dehydrated

D. frenulum

9. The tiny taste bud on our tongue is called?

A. melanin

B. membrane

C. papilla

D. septum

10. Water vapour is a _________

A. solid

B. liquid

C. gas

D. virus

11. How many tastes can be detected on the tongue?

A. 5

B. 3

C. 4

D. 6

12. The outer layer of the skin is called the ___________

A. surface

B. fossil

C. dermis

D. epidermis

13. Which of these is not a sense organ?

A. skin

B. heart

C. tongue

D. ear

14. The ________ is the air around us which is filled with gases.

A. wind

B. oxygen

C. pollutants

D. atmosphere

15. When water becomes dirty we say it is polluted or _________.

A. contaminated

B. filtrated

C. chlorinate

D. precipitated

16. The big muscle underneath our lungs is called the ___________.

A. heart

B. brain

C. diaphragm

D. diagram

17. Water freezes at __________ degrees Celsius.

A. 0

B. 100

C. 20

D. -5

18. The process by which plants loses water is called__________

A. transpiration

B. investigation

C. malnutrition

D. filtration

19. Oxygen is transported throughout the body by the ___________.

A. lungs

B. ribs

C. vain

D. tear duct

20. When we apply force directly to something this is called ___________.

A. pressure

B. inhalation

C. movement

D. plunger

21. When sun starts to shine after rain, what happens to the water puddles? It _______

A. precipitates

B. condenses

C. evaporates

D. transpires

22. ________ is a substance that reduce friction.

A. Air

B. Lubricant

C. Lava

D. Melanin

23. ____________ are toothed wheels found in complex machine.

A. push

B. wedges

C. gear

D. pulley

24. We can make water safe for drinking by __________

A. filtration

B. examining it

C. boiling

D. none of the above

25. A sloping surface that raises heavy loads to higher level using less effort is a/an ______.

A. screw

B. lever

C. chock

D. inclined plane

26. Choose True or False for questions 26-35.

A broom is a machine .

A. True

B. False

27. The nostrils are separated by the septum.

A. True

B. False

28. Solar energy is from the wind.

A. True

B. False

29. A flagpole is an example of a moveable pulley.

A. True

B. False

30. One third of the human body is made up of water.

A. True

B. False

31. We can make water safe for drinking by chlorination.

A. True

B. False

32. The body moves like a self- repairing machine.

A. True

B. False

33. A doctor who specializes in skin care is called a psychiatrist.

A. True

B. False

34. Water lily is a flower that grows in pods and lake.

A. True

B. False

35. Oil leaks from ships and boats cause water pollution

A. True

B. False

36. Match the statements with the correct responses

The three states of matter are...	Improper disposal of waste Unselect Use it wisely Unselect Carbon Dioxide Unselect Solid, liquid and gas Unselect rivers, lakes, streams, oceans Unselect The presence of air. Unselect
To conserve water we should...	Improper disposal of waste Unselect Use it wisely Unselect Carbon Dioxide Unselect Solid, liquid and gas Unselect rivers, lakes, streams, oceans Unselect The presence of air. Unselect
A gas that plants use to manufacture their food...	Improper disposal of waste Unselect Use it wisely Unselect Carbon Dioxide Unselect Solid, liquid and gas Unselect rivers, lakes, streams, oceans Unselect The presence of air. Unselect
One cause of water pollution..	Improper disposal of waste Unselect Use it wisely Unselect Carbon Dioxide Unselect Solid, liquid and gas Unselect rivers, lakes, streams, oceans Unselect The presence of air. Unselect
Water for domestic uses comes from sources such as...	Improper disposal of waste Unselect Use it wisely Unselect Carbon Dioxide Unselect Solid, liquid and gas Unselect rivers, lakes, streams, oceans Unselect The presence of air. Unselect
I placed some dry soil in a transparent jar and poured enough water to cover it. I noticed bubbles coming from the soil. Why was this so?	Improper disposal of waste Unselect Use it wisely Unselect Carbon Dioxide Unselect Solid, liquid and gas Unselect rivers, lakes, streams, oceans Unselect The presence of air. Unselect

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