Matter
What is it called when energy is removed from a liquid, turning it into a solid?
Freezing
Heat always moves from ______ to ______
hot to cold
What type of heat transfer causes hot air to rise and cold air to fall?
Convection
What is the height of a wave called?
Amplitude
What color do we see when all colors of light are absorbed?
Black
What is the opposite of evaporation?
Condensation
Metal allows heat to easily pass through. That means it is a good _______________
conductor
What type of heat transfer would cause a chocolate bar to melt in the car?
Radiation
Sound waves need a ____________ to travel
medium
What wave behavior causes echoes?
Reflection
What has particles that are very spread out with high kinetic energy?
Gas
______________ is something that does NOT allow heat to easily pass through.
Insulator
What type of heat transfer causes your feet to burn on the ground during a sunny day?
Conduction
Light waves do NOT need a medium, which means they can travel through a _______________
vacuum
What wave behavior allows light to shine through a window?
Transmission
What happens to particles when you add heat to something?
They spread out and move faster
When you hold an ice cube it will start to melt in your hand. Where is the thermal energy coming from and where is it moving to?
From your hand to the ice
When you boil water, why do bubbles form on the bottom of the pot first?
The water on the bottom of the pot is closer to the heat (convection)
If a wavelength is shorter, that means the frequency is _____________
higher
What wave behavior may cause light to bend as it travels from one medium to another?
Refraction
Why do liquids become solids when heat is removed?
The particles slow down and come closer together
You put a bowl into the freezer to make it cold. What is the direction of heat transfer here?
From the bowl to the air in the freezer
What 2 types of heat transfer occur when a crayon melts on the concrete during a sunny day?
Radiation and conduction
What will happen to a sound if you increase the wave's amplitude?
It will get louder
Why do recording studios have foam panels on the walls?
To absorb the sound and prevent echoes