States of Matter
Phase Changes
Heat Transfer
Thermal Energy
Conductor or Insulator
100
What are the 3 states of Matter
Solid, Liquid and Gas
100
What must be added to change matter from state to state?
Heat, Heat Energy, Energy, or Thermal Energy
100
Double Jeopardy: What are the 3 types of heat transfer?
conduction, convection and radiation
100
What is another word for thermal energy?
Heat Energy
100
Are metal objects conductors or insulators?
Conductors
200
What state of matter has a definite shape and volume.
Solid
200
Double Jeopardy: When a solid moves from solid to a liquid, what phase change is occurring?
Melting
200
What heat transfer requires two objects to be touching?
Conduction
200
How do you measure thermal energy?
Temperature
200
Give 3 examples of insulators.
Plastic, Wood, Paper, Rubber, Cement, Foam
300
What state of matter has a definite volume but not a definite shape?
Liquid
300
When a liquid turns into a solid, what phase change is occurring?
Freezing
300
What is an example of radiation?
Sun heating sand.
300
When temperature increases, molecules have ______ energy.
more
300
Define Conductors
A material that allows heat to transfer quickly through it.
400
Double Jeopardy: Draw the particles in a gas state.
Particles should be spread out
400
Explain what happens when evaporation occurs
A substance is being heated up so that a liquid turns into a gas.
400
Define Convection.
Heat being transferred through liquids and gases because hot particles rise and cold particles sink.
400
When temperature decreases, molecules move _________
slower
400
Why do people use insulators when building a home?
double jeopardy: because insulation allows heat transfer to slow down. It can prevent heat from escaping or entering the house.
500
Order the states of matter from most energetic to least energetic.
Gas, Liquid, Solid
500
There are drops of water on the outside of my water bottle. Explain what is occurring using vocabulary from this Unit.
The water bottle is cooling the air around it and changing the gas particles to liquid on the water bottle. This is called condensation.
500
Double Jeopardy. I put an ice pack on my forehead after I got hit in the face with a volleyball. Explain how heat is transferring between my head and the ice pack
The heat from my head is transferring to the cold ice pack (through conduction) because heat always travels from hot to cold.
500
Which object has more thermal energy. A heated swimming pool or a cup of hot cocoa. Explain why.
A swimming pool. Even if the swimming pool is cold, it still has more particles which allows more energy.
500
My cooking pot at home is metal with rubber handles. Explain why they chose to create the pot metal and the handles rubber.
They used metal so that heat could easily transfer from the stove to the substance inside of the pot through conduction. They used rubber to slow heat transfer from the pot to your hands.