Worksheets6 TH
Total questions: 15
Worksheet time: 8mins
1. On a very hot summer morning, water on the ground may turn into water vapor, this change is called........
a. melting.
b. evaporation.
c. freezing.
d. condensation.
2. Some thermometers contain a colored alcohol, what happens to alcohol when the thermometer is placed in hot water?...........
a. Alcohol contracts.
b. Alcohol evaporates.
c. Alcohol changes its color.
d. Alcohol expands.
3. When the temperature of a rod of iron is increased..........
a. its length increases.
b. its length decreases to its half.
c. its length doesn't change.
d. its length decreases to its quarter.
4. When the temperature of alcohol inside thermometers increases, its volume………..
a. increases causing its contraction.
b. decreases causing its expansion.
c. decreases causing its contraction.
d. increases causing its expansion.
5. As a result of heat flow through metals, they............
a. expand.
b. contract.
c. get smaller.
d. are not affected.
6. Expansion joints are designed to allow concrete…………. when temperature…………… to keep bridges safe from buckling.
a. expands-decreases
b. expands-increases
c. expands doesn't change
d. contract-doesn't change
7. When a thermometer is placed in a cup of iced water, the liquid inside the thermometer…………….. due… to its………….
a. goes down-expansion.
b. rises up-expansion.
c. goes down-contraction.
d, rises up - contraction.
The decrease in volume of matter that occurs when matter is cooled is called expansion.
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2. When an object gains heat, its temperature increases and its state may change.
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3. We can measure the temperature by using thermometers.
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4. The main idea to make a thermometer is changing the volume of liquid inside it according to the temperature.
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5. When a substance is cooled, its molecules come close together.
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6. If it is hard to open the lid of the jar, we need to pour cold water on the lid of the jar to open it easily.
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7. When objects lose heat, they contract.
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8. When a substance expands, its volume increases.
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