detectives
The total motion of particles inside an object.
thermal energy
When particles move faster, what happens to temperature?
it increases
Heat moving through a solid by touching.
conduction
A hot book is left on a desk. What will happen?
it will cool down
How fast heat moves through a material is called what?
conductivity
Two cups have the same temperature, but one is bigger. What does it have more of?
heat energy
What happens to particles when an object is heated?
they move faster
Heat moving through liquids or gases by movement.
convection
A cold block touches a warm block. What happens to the cold block?
it warms up
Which block heats up fastest: metal, wood, or plastic?
metal
Metal and wood feel different even at the same temperature. Why?
metals conducts heat faster
Two blocks touch. Why does heat move from the warm one to the cool one?
heat flow from hot to cold
Feeling heat from the Sun without touching it.
radiation
Two objects reach the same temperature. What is this called?
thermal balance
A thick block feels colder because it has more of what?
thermal energy
When particles move faster, what increases?
thermal energy
If all motion stopped, what would be zero?
temperature
A metal spoon gets hot in soup and the air above gets warm. Name both types.
conduction and convection
Ice melts faster on metal than wood. Why?
Metal conducts heat faster
Two frozen blocks: metal and wood. Why does metal feel colder?
it conducts heat faster
Heat is really this kind of energy.
kinetic energy
Hot water and warm water mix. What will the final temperature be like?
between the two temperatures
You feel fire heat, the air rises, and a metal gate gets warm. Name all three.
Radiation, convection, conduction
A sweater keeps you warm not by making heat, but by doing what?
it traps heat
A big block at 20°C has more energy than a small block at 30°C. Why?