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WorksheetsHeat Summary
Total questions: 15
Worksheet time: 6mins
Heat is a form of
(a)
The surrounding temperature is always the same.
yes
no
When an object gains heat, it (a) .
When an object (a) heat, it contracts.
Which substance expands the most when heated?
gas
liquid
solid
They all expand by the same amount.
Which substance will contract the least when cooled down?
They all contract by the same amount.
iron
water
oxygen
An iron block at 40°C is placed in contact with an iron block at 80°C . What is the final temperature of both blocks?
40°C
60°C
80°C
120°C
Two liquids, one at 40°C and the other at 90°C are mixed. What is likely to be the temperature of the mixture?
40°C
50°C
65°C
130°C
How can you open the tight metal cap of a ketchup bottle?
Heat the cap only
Cool the cap only
Heat the bottle only
Heat the bottle and cap
A thermostat is used to control temperature. It is used in _______.
printer
electric iron
thermometer
radio
When heated, brass strip expands more than steel. Draw and label a heated bimetallic strip consisting of brass and steel.
What is the thermometer reading?
(a)
What is the thermometer reading?
(a)
When water absorbs heat and is changing into gas, the temperature of the water _________.
decreases
increases
keeps changing
remains the same
Is heat lost or gained by you when you enter an air-con room?
heat is gained
heat is lost
