Molecular Motion & Thermal Energy
What happens to the motion of molecules when thermal energy increases?
What is molecules move faster?
What is the primary method of heat transfer in solids?
What is conduction?
The amount of heat needed to raise the temperature of 1 gram of a substance by 1°C?
What is Specific Heat
All matter exists in three states which are...
What is solids, liquids, and gases.
A material that does not conduct heat well is a(n) ___________________.
What is insulator.
In which state of matter do molecules move most freely?
What is gas?
What type of energy transfer occurs when warm fluids rises and cool fluids sinks?
What is convection?
Which material would require more energy to change temperature, one with high specific heat or low specific heat?
What is high specific heat?
These are the two ways liquid turns into a gas.
What are vaporization and evaporation?
A material that conducts heat well is called a(n) ____________________.
What is conductor.
How does thermal energy affect the state of matter of a substance?
What is increasing thermal energy can change the state from solid to liquid to gas?
How does energy transfer when you place a metal spoon in a hot cup of tea?
What is conduction (the heat transfers from the tea to the spoon)
Why does water take longer to heat up than sand on a beach?
What is because water has a higher specific heat?
This is what is happening when a cold glass "sweats".
What is condensation?
Wood, rubber, and cork are all good _________________.
What is insulators.
In which state of matter do molecules vibrate but stay in place?
What is solid?
How does heat transfer when you hold an ice cube in your hand?
What is conduction
If you heat equal amounts of water and metal, which one will heat up faster?
What is metal, because it has a lower specific heat?
When gas loses a sufficient amount of thermal energy, it will change into a ______________.
What is liquid.
_______________ are all good conductors.
What is metals.
What happens to the speed of molecules when a substance cools down?
What is the molecules slow down?
Which type of heat transfer is involved in the warming of Earth's surface by the Sun?
What is radiation?
Why do cooking pots often have copper bottoms?
What is because copper has a lower specific heat, allowing it to heat up quickly and evenly?
Freezing occurs when a substance ____________ thermal energy.
What is loses.
A well-_____________ building is comfortable inside whether the weather is hot or cold outdoors.
What is insulated.