ENERGY
Thermal Energy
More Thermal Energy
Heat Transfer
More Heat Transfer
100
Energy is the ability to do _____.
Energy is the ability to do WORK.
100
What is thermal energy?
Heat energy
100
Cold matter has MORE/LESS thermal energy? Explain.
Less. The participles do not move as fast when the temperature is low.
100
Name the 3 types of heat transfer.
Conduction, Convection, Radiation
100
What is a conductor?
Materials that allow heat energy to be transferred.
200
Name M.E.L.T.S
Mechanical
Electrical
Light
Thermal
Sound
200
What is the measurement of hotness and coldness?
Temperature
200
How does thermal energy travel?
From hot to cold.
200
Radiation is... (Give 2 explanations)
- Heat transfer through open space
- No contact between objects
- Heat is transferred in the form of waves
200
What is an insulator?
Materials that do not allow heat energy to be transferred.
300
What is the energy for moving objects?
Mechanical Energy
300
What instrument is used to measure hotness and coldness of an object?
Thermometer
300
Is heat the same as temperature? Explain.
No. Temperature measure how hot something is. Heat is the energy that increases warmth/hotness.
300
Explain the difference between conduction and convection.
Conduction: Direct contact, heat transfer through solids
Convection: heat transfer through liquids and gases
300
Give 2 examples of conductors and 2 examples of insulators.
Conductors: steel, copper, aluminum, gold
Insulators: foam, cotton, paper, plastic
400
Describe what chemical energy is.
Fuel and energy stored in food.
400
Name 3 sources of geothermal energy.
Geysers, volcano, hot springs.
400
1) When we dropped dye into hot, cold, and room temperature water, which container spread the fastest? 2) Explain why that happened.
1) Hot
2) The particles are moving faster in hot water, which causes the dye to spread quicker.
400
Give an example of conduction, convection, and radiation.
Conduction: Ice cream melting in hand, touching hot stove
Convection: Hot air balloon, boiling water in a heated pot
Radiation: Heating hand through campfire, sun heating earth
400
Explain how the 3 types of heat transfer is taking place in each picture.
Radiation: Person is feeling heat from fireplace with open space in between.
Conduction: Person is having direct contact with the fire poker. Both are solids. Heat is transferred from the poker to the hand.
Convection: When the fan turns on, it moves warm and cool around.
500
Energy makes matter _____ or _____.
Energy makes matter move or change.
500
Name 5 sources of thermal energy.
Sun, geothermal, mechanical, chemical, electrical
500
Describe and explain the "Mysterious Balloon" experiment.
Describe: A bottle with a balloon was placed in hot and cold water. The balloon inflated when placed in hot water.
Explain: The heat from hot water is causing the air particles in the bottle to move faster. It needs room to move and expand, so air particles are moving into the balloon. Therefore, it inflated.
500
Explain what a convection current is.
When liquids/gases are heated, they rise. The particles move apart when they get hot. Hot molecules move up, cold molecules move down. As particles heat through while moving up and down, it creates a convection current.
500
Describe what types of heat transfer is happening.
Conduction: Pizza directly on the base.
Convection: Heat is making air hot. This hot air moves around and transfers heat to the sides and top of the pizza
Radiation: Heat from fire is travelling through open space.