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WorksheetsUnit 3 Test Review
Total questions: 12
Worksheet time: 6mins
A metal rod is placed over a flame. The other end begins to rise in temperature and is measured with a thermometer. Which best describes what is happening during this investigation?
Radiant energy warms the thermometer
Mechanical energy from the flame carries heat to the thermometer
Convection carries heat to the thermometer
Heat from the flame is conducted through the metal rod to the thermometer
A group of friends gather around a fire to stay warm. This is an example of ________.
conduction
convection
radiation
Thermal energy ALWAYS moves from _____ to _____.
solid to liquid
ice to water
hot to cold
solid to gas
A diagram of a pendulum is shown above. Five different positions are shown. At which position will the pendulum’s potential energy equal its kinetic energy?
1
2
3
4
5
What is the difference between potential energy and kinetic energy?
Potential energy is the energy of an object due to an applied force, while kinetic energy
is energy stored after the applied force.
Potential energy is the energy of an object due to its motion, while kinetic energy is
energy due to its position.
Potential energy is the energy of an object due to its position, while kinetic energy is
energy due to its motion.
What is the energy transformation of a battery powered radio?
Electrical → Sound → Chemical
Sound→ Kinetic → Electrical
Chemical → Electrical → Sound
Students were investigating thermal energy.
They put a metal spoon in the freezer.
They put hot water in a beaker and measured the water temperature.
They removed the spoon from the freezer and put it in the beaker.
After 10 minutes, the students measured the water temperature again and touched the spoon.
The data is shown in the table.
Which best describes how the thermal energy in the water and in the spoon changed during the investigation?
The water lost thermal energy, and the spoon gained thermal energy.
The water gained thermal energy, and the spoon lost thermal energy.
The water and the spoon both gained thermal energy.
The water and the spoon both lost thermal energy.
A light bulb is put on a closed circuit works by allowing electricity to flow through wires in the bulb. The bulb will give off infrared radiation. What is this an example of?
electrical energy being transformed into mechanical energy
magnetic energy being transformed into electrical energy
kinetic energy being transformed into potential energy
electrical energy being transformed in thermal and light energy
Which statement correctly describes the force required to raise the box using ramps?
The same amount of force will be required when using either ramp because both
ramps are 1 meter high.
More force will be required to raise the box using Ramp Y because Ramp Y is longer
than Ramp X.
More force will be required to raise the box using Ramp X because Ramp X is steeper
than Ramp Y.
The same amount of force will be required when using either ramp because both have a mass of 10g.
The Rover shown was sent to Mars to gather data. The Rover is powered mainly by solar panels. It has rechargeable batteries that provide energy when the Sun is not shining. Which types of energy does the Rover most likely use? (Select three answers)
magnetic
electrical
thermal
radiant
chemical
At which point in the diagram does the ball have the least kinetic energy?
3
4
1
2
