WorksheetsUnit 8 Review
Total questions: 17
Worksheet time: 9mins
Brodie is using a lamp to help him see when he reads. He noticed that the bulb got warm after a while. What two forms of energy are being produced by the lamp?
Light and sound
Light and thermal
Sound and thermal
Mechanical and light
Joshua is making a trivet. A trivet is placed on a table beneath a hot pot. He knows that he must choose something that will NOT allow heat to pass easily from the hot pot to the table. Which material should Joshua use to make the trivet?
Wood
Aluminum
Copper
Iron
When a cricket rubs its legs together, ______________ energy is made because ______________.
sound ; moving of legs causes vibrations
thermal; of sound waves
potential; of muscle contractions
chemical; of electrical impulses
Which of the following is a conductor?
Wooden spoon
Rubber glove
Metal spring
Plastic duck
Which of the following is an insulator?
Frying pan
Oven mitt
Logs
all of the above
Travels in straight lines, travels through empty space. Energy that our eyes can see: what is it?
Sound
Light
Gravity
Heat
Which of the following is an example of an insulator?
Wooden block
Nail
Penny
Paper clip
Mark places a cold pat of butter on a slice of hot toasted bread. The butter melts. Which statement below explains why the butter melts?
The hot toast quickly cools when the butter is placed on it.
Heat moves from a cooler object to a warmer object.
Heat is transferred because the hot toast and the butter are touching.
The transfer of heat will stop when the butter begins to melt.
Differentiate among forms of energy. Which object converts electrical energy into mechanical energy?
A violin
A computer monitor
A computer
A toaster
What does Liam conclude about the insulating ability of the lunchboxes after analyzing the data from his test?
Metal is better than foam.
Foam and metal are equal.
Foam is better than metal.
Neither kept the items cold.
Differentiate between the conductors and insulators shown above. Which cup will lose heat the quickest?
foam cup on foam plate
foam cup on metal plate
metal cup on foam plate
metal cup on metal plate
What should happen to the temperature on the thermometer after 30 minutes when the sun begins to shine on it?
The temperature will decrease.
The temperature will stay the same.
The temperature will increase.
The temperature will fluctuate widely.
What form of energy causes the thermometer to change temperature?
Thermal energy
Mechanical energy
Sound energy
light energy
What is the best insulator for preventing the transfer of heat?
Copper
Aluminum
Rubber
Silver
Glass
Darnell needs an insulator to keep liquids hot. He tests how quickly different materials change temperature when they are heated. All are heated to 20 degrees Celsius and the data recorded after 20 minutes. Which material should he choose as the insulator?
Material 1
Material 2
Material 3
Material 4
What type of energy travels when you hear the bell ringing in class?
Electrical energy
Sound energy
Kinetic energy
Thermal energy
Imagine you have a hot cup of cocoa. Which would you rather hold it in: a metal cup or a wooden cup?
Metal cup because it conducts heat better
Wooden cup because it conducts heat better
Metal cup because it is more durable
Wooden cup because it does not conduct heat as well as metal
