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- 1. Multiple Choice
What are the three states of matter?
solid, water and air
solid, liquid and gas
heat, temperature and effects
- 2. Multiple Choice
What is a heat source?
Something that gains heat
Something that feels hot to the touch
Something that gives off heat
Something that glows
- 3. Multiple Choice
When objects are at different temperatures,
heat flows from the hotter to colder object.
heat flows from colder to the hotter object.
heat flows from the objects to the surroundings.
no heat flows until all temperature are the same.
- 4. Multiple Choice
Recall the experiment carried out for WS 2.4, which of the following is the hotter object?
the flask
the balloon
the air in the flask
the water in the beaker
- 5. Multiple Choice
When the flask was immersed into the hot water, which of the following describes the flow of heat correctly?
Only the balloon gained heat from the hot water.
Only the flask gained heat from the hot water.
The flask and air in the flask gained heat from the hot water.
The air in the flask lost heat to the hot water.
- 6. Multiple Choice
Which of the following correctly explains why the balloon inflated?
Hot water gained heat and expanded.
The balloon gained heat and expanded.
The air in the flask gained heat and expanded.
The flask gained heat and expanded.
- 7. Multiple Choice
The metal ball and metal ring experiment showed that
solid gains heat and expands, loses heat and contracts.
solid gains heat and contracts, loses heat and expands.
solid expands and gains heat, contracts and loses heat.
solid expands when it gives out heat and contracts when it takes in heat.
- 8. Multiple Choice
The experiment 2.3 with coloured water in glass tube shows that _______ gains heat and ________, loses heat and _________.
solid / liquid / gas
solid / expands / contracts
liquid / expands / contracts
gas / expands / contracts
- 9. Multiple Choice
Which one of the following statements is incorrect about the effects of heat?
All matter expand when they gain heat, contract when they lose heat.
All matter increase in temperature when they gain heat, decrease in temperature when they lose heat.
All matter becomes room temperature after being left out in the open for a long time.
Gas has no definite volume and so it cannot expand or contract.
- 10. Multiple Choice
Which of the following materials will feel the hottest when left under the hot sun for an hour?
Plastic
Metal
Fabric
Wood
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