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26 questions
Which of the following best describes temperature?
Number of molecules
Motion of molecules
Size of molecules
Type of molecules
When two things are the same temperature:
They have the same number of molecules
Their molecules stop moving
Their molecules move at the same average speed
Heat transfer between the two things stops
When you heat a pot on a stove, the handle gets warm. Which type of heat transfer is responsible?
Conduction
Radiation
Convection
All of the above
Heat from the Sun reaches Earth through which type of heat transfer?
Conduction
Radiation
Convection
All of the above
Convection currents occur:
Only in liquids
When a dense substance is warmer than a less dense substance
In both liquids and gases
Weakly in solids
All of the following are examples of convection currents, excerpt:
Warm air rising in a house
Cold water sinking to the bottom of the lake
Water flowing through pipes
Steam from hot soup rising into the air
On a hot summer day, a student dropped an ice cube onto a park bench. Within minutes, the ice cube melted. Which best describes the process the student observed?
radiation
combustion
conduction
convection
A cold metal spoon is placed in a bowl of hot soup. Which best describes how the spoon is affected?
The heat from the soup does not affect the temperature of the spoon.
The heat from the soup is conducted through the spoon, making the spoon warmer.
The cold air in the room radiates into the soup, cooling it, and keeping the spoon cool.
The cold from the spoon is conducted into the soup, causing the soup to cool to the same temperature as the spoon.T
Which is an example of conduction?
Steam is rising from a cup of hot coffee.
A hot biscuit is warming the plate it is on.
The sun is shining through a window and warming a table.
Which best describes the process of convection?
Convection is the primary way heat travels through rays.
Convection is the primary way heat travels through metals.
Convection is the primary way heat travels through appliances.
Convection is the primary way heat travels through liquids and gasses.
Which best explains how ice melts in a person’s hand?
The heat from a person’s hand transfers by radiation to the ice, causing it to melt.
The heat from a person’s hand transfers by conduction to the ice, causing it to melt.
The cool temperature of the ice transfers by radiation to a person’s hand, cooling it off.
The cool temperature of the ice transfers by conduction to a person’s hand, cooling it off.
A boy touches a stove and gets burned. What transfer of heat caused his hand to get burned?
radiation
conduction
convection
combustion
Which is the best choice for the handle of a frying pan?
Metal, because it conducts heat.
Wood, because it conducts heat.
Metal, because it does not conduct heat.
Wood, because it does not conduct heat.
Which substance will conduct the least amount of heat?
glass
copper
plastic
aluminum
How is heat transferred in radiation?
through solids
through liquids
through time
through air
Which is an example of radiated heat for cooking?
cooking a pot of soup
scrambling eggs on the stove
grilling hot dogs over a campfire
frying hamburgers in a frying pan
Which is an example of radiation?
boiling a pot of noodles for dinner
getting hot from lying in the sun
feeling warm while taking a shower
burning yourself after touching a hot plate
Which best describes the transfer of heat due to the movement of gases and liquids?
radiation
convection
evaporation
condensation
Which best explains why metal is a good material to make frying pans?
Metal is a good conductor of heat and transfers heat from the stove to the food.
Metal is a good conductor of heat and does not transfer heat from the stove to the food.
Metal is a poor conductor of heat and transfers heat from the stove to the food.
Metal is a poor conductor of heat and does not transfer heat from the stove to the food.
How does heat energy from the Sun reach Earth?
radiation
solar wind
conduction
convection
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