Under what condition can heat pass between two objects?
the objects must be at different temperatures
the objects must have a lot of energy
the objects must both be hot
the objects must both be large
Which bowl has more energy, a large bowl of soup or a small bowl of soup? (they are both the same temperature)
the large pan of soup has more thermal energy
the small bowl of soup has more energy
they both have the same amount of energy
there is not enough information to know
Substances that do NOT conduct thermal energy very well are called _____________.
insulators
convectors
conductors
exchangers
Substances that conduct thermal energy very well are called ____________.
Your body feels warmer when it absorbs _____________ waves.
infrared
radio
blue
red
What is the transfer of thermal energy from one substances to another through direct contact?
conduction
convection
radiation
graduation
What is the transfer of thermal energy by the movement of a liquid or gas?
What is the transfer of thermal energy through electromagnetic waves such as visible light and infrared waves?
condensation
Objects have to _________ for conduction to occur.
collide
have pride
hide
confide
______________________________ occur during convection.
convection currents
ocean currents
air currents
dirt currents
____________ can occur when there is an energy transfer between particles of matter or an energy transfer between particles in space.
presentation
Choose the example that describes conduction.
metal spoon in hot soup
boiling water
solar energy
Choose the example that describes convection.
Choose the example that describes radiation.
Which of the following heat transfer methods do not need molecules?
How fast do all electromagnetic waves travel?
300,000 km/s
200,000 km/s
100,000 km/s
300,000,000,000,000,000,000,000,000,000,000 km/s
AM waves are less effected by electrical noise, so they sound better than FM stations
Choose the three modern devices that use microwaves.
Microwave Ovens
Cell phones
artificial satellites in space
oranges
apples
pumpkin pie
The colors of the visible spectrum in order of wavelength are in which order?
rainbow order
alphabetical order
chronological order
Choose convection, radiation or convection for each scenario.
One heater located in the deep end warms Henry's entire pool.
Harold licks a juice pop that he has just removed from the freezer. The tip of his tongue freezes and sticks to the icy-cold treat.
When Jerald sits near the campfire, her faces feels hot even though her back feels cold.
Why does metal feel colder even though both are at room temperature?
metal in a better conductor than wood
metal in a better radiator than wood
metal in a better convection-er than wood
Why is the end of the spoon in a hot bowl of soup hot, but not as hot as the soup.
It does not have as much energy as the soup. Some energy transfers to the air, other parts of the spoon, and the soup.
It does not has as much energy as the soup. No energy transfers to the air, other parts of the spoon, and the soup.
It does not have as much energy as the soup. Some energy transfers to the chair, other parts of the fork, and the soup.
Which metal conducts the heat the best.
copper
steel
aluminum
brass
What happens to water at the bottom of a hot pot?
It becomes less dense, floats to the top, cools and sinks to the bottom.
It becomes more dense, floats to the bottom, cools and sinks to the top.
It becomes less dense, and sinks to the bottom.
It becomes more dense, floats to the top, cools and sinks to the bottom.
If you wanted to bake brownies faster which pan would you use?
glass
metal
ceramic
no pan
How do you prevent conduction?
Choose all that apply
vacuum
How do you prevent convection?
use small spaces
How do you prevent radiation?
use shiny surfaces
microwave ovens
