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Forms of Energy — Free MYP2 Sciences Practice Questions
1QuestionDefinition and Examples of Different Energy TypesConcept Practice
2 marks~3 minCriterion A
The diagram shows four objects: a moving car, a stationary ball, a stretched rubber band, and a lit lamp.
Kinetic energy is the energy an object has because it is moving.
Kinetic energy is the energy an object has because it is moving.
a
Identify the object in the diagram that has kinetic energy. [1]
b
Explain why that object has kinetic energy. [1]
Solutions
2QuestionEnergy in Daily Life ApplicationsAssessment Practice
5 marks~8 minCriterion C
A student says: "A toaster uses electrical energy to make heat."
The diagram shows a toaster with a heating element at and a bread surface at . Arrows show electrical energy transforming into thermal energy in the element, thermal energy transferring to the bread, and some energy lost as radiant energy to the surroundings.
The diagram shows a toaster with a heating element at and a bread surface at . Arrows show electrical energy transforming into thermal energy in the element, thermal energy transferring to the bread, and some energy lost as radiant energy to the surroundings.
a
Identify one reason why the student's claim is incomplete. [1]
b
Describe the energy transformations shown in the diagram, referring to the temperature values. [2]
c
Explain why the radiant energy lost to the surroundings is considered waste energy, and compare this with the thermal energy that reaches the bread. [2]
Solutions
3QuestionKinetic and Potential EnergyAssessment Practice
6 marks~9 minCriterion B
A student releases a pendulum bob from different heights and records the maximum height it reaches on the other side.
| Release height (cm) | 50 | 40 | 30 | 20 |
|---|---|---|---|---|
| Maximum swing height (cm) | 48 | 38 | 27 | 15 |
a
Identify the type of energy the bob has at its highest point. [1]
b
Calculate the energy lost (in cm) for each trial. Show your working, then estimate the maximum swing height for a release height of 10 cm. [3]
c
The energy lost increases as the release height decreases. Explain why this pattern occurs, using the terms gravitational potential energy and kinetic energy. [2]
Solutions
4QuestionDefinition and Examples of Different Energy TypesAssessment Practice
6 marks~9 minCriterion D
A family in a rainy region uses a solar cooker. A curved mirror focuses sunlight onto a dark cooking pot, which heats up and cooks the food.
a
Identify one energy transformation that occurs in the solar cooker. [1]
b
Explain why this solar cooker may not work well for this family on most days. [2]
c
Compare using the solar cooker with using a gas stove as the family's main cooking method. State which you would recommend and give one reason. [3]
Solutions
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