WorksheetsChapter 6: Heat and Thermal Energy
Total questions: 15
Worksheet time: 4hrs 45mins
What is the total energy of all the particles in an object called?
chemical energy
thermal energy
potential energy
mechanical energy
The temperature scale used in most of the world is the...
Celsius scale
Fahrenheit scale
How does heat flow when you place an ice cube in your hand?
Heat flows from the ice to my hand.
Heat flows from my hand to the ice.
Heat flows back and forth between the ice and my hand
Compare the average motion of the particles in the three containers.
Average motion of the particles is greater at a higher temperatures. The average motion is the same for A and B, and greater for C.
Average motion of the particles is less at a higher temperatures. The average motion is the same for A and B, and less for C.
Average motion of the particles is greater at a lower temperatures. The average motion is greater for A and B, and less for C.
Compare the total amount of thermal energy in containers A and B.
The thermal energy in B is twice the thermal energy in A. It has half as many particles at the same temperature.
The thermal energy in B is half the thermal energy in A. It has half as many particles at the same temperature.
The thermal energy in B is twice the thermal energy in A. It has twice as many particles at the same temperature.
What is the process by which heat transfers from one particle of matter to another when the particles collide?
conduction
convection
expansion
radiation
A convection current is...
the circular motion of a fluid caused by sinking of fluid as it warms and the rising of fluid as it cools.
the circular motion of a fluid caused by rising of fluid as it warms and the sinking of fluid as it cools.
the circular motion of a fluid caused by both rising and sinking of warm fluids.
Identify each example of heat transfer as conduction, convection, or radiation: opening the windows in a hot room; a lizard basking in the sun; putting ice on a sprained ankle.
Radiation; convection; conduction
Conduction; radiation; convection
Convection; radiation; conduction
How can heat be transferred across empty space?
By conduction, which requires matter.
By radiation, which uses waves that don't need matter.
By convection, which requires hot air molecules rising and cool air molecules sinking.
Suppose you try to heat your home using a fireplace in one of the rooms. Would a fan be helpful?
No, the fan would only cool off the warm air.
No, the fan would only make the warm air circulate upward and cool air downward.
Yes, the fan could be used to move the warmed air toward the rest of the house.
Suppose you want to know the amount of heat needed to raise the temperature of 2 Kg of copper by 10 degrees C. What property of copper do you need to know?
The thermal energy of the copper.
The temperature of the copper.
The specific heat of copper.
The melting point of copper.
Wool is a good insulator, which means...
it does not transfer heat well.
it does transfer heat well.
It just does.
When telephone lines are hung they are allowed to sag. Why?
The lines expand when they are cold. They need slack so they don't touch anything else.
The lines contract when they are cold. They need slack so they don't snap.
Why are two panes of glass used in the window shown below? There is an air space between them.
Air is a good insulator, so the air between the window panes helps prevent heat transfer.
Air is a good conductor, so the air between the window panes helps prevent heat transfer.
Air is not a good insulator, it has no real purpose it is there due to the design of the window.
The specific heat of iron is 450 J/(kgK). How much thermal energy must be transferred to 15 kg of iron to raise it temperature by 2.0 K?
450 J
2,700 J
5,400 J
13,500 J
