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Conservation of Energy — Free MYP1 Sciences Practice Questions
1QuestionClosed Systems and Energy AccountingConcept Practice
2 marks~3 minCriterion A
A toy car powered by a battery moves inside a sealed clear plastic box. The car slows down and stops.
a
Identify the type of system the sealed box creates. [1]
b
Describe what happens to the energy from the battery by the time the car stops. [1]
Solutions
2QuestionClosed Systems and Energy AccountingConcept Practice
2 marks~3 minCriterion A
The diagram below shows a sealed thermos containing hot soup. It has three parts: the soup, the air gap, and the thermos wall.
a
Identify which part stores thermal energy. [1]
b
Describe why that part stores thermal energy. [1]
Solutions
3QuestionExplaining Why Energy is Never Lost Only TransferredConcept Practice
4 marks~6 minCriterion C
A child rolls a toy car down a ramp. The car speeds up as it goes down, then rolls across a carpet and stops.
a
Name the type of energy the car has when it is moving. [1]
b
Describe what happens to the car's energy when it stops on the carpet. [1]
c
The carpet feels slightly warm after the car stops. A friend says the car's energy has disappeared. Describe how you would explain to your friend that this is not true, and identify one other form of energy that is also produced when the car stops. [2]
Solutions
4QuestionClosed Systems and Energy AccountingConcept Practice
2 marks~3 minCriterion B
A student drops a ball from different heights onto a mat and measures how high it bounces each time.
a
Identify the independent variable and the dependent variable in this investigation. [1]
b
State one variable that must be kept the same to make this a fair test. [1]
Solutions
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