1. Unit 9 Lesson 3 What Is Heat?
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2. Night vision! Unit 9 Lesson 3 What Is Heat?
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3. Night vision! Unit 9 Lesson 3 What Is Heat?
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4. Unit 9 Lesson 3 What Is Heat?
The Energy of Heat
Heat is the energy that moves between objects of different temperatures.
The difference in temperature makes the energy move.
Heat moves from an object with a higher temperature to one with a lower temperature.
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5. Heat on the Move! Heat can move in different ways.
Unit 9 Lesson 3 What Is Heat?
Heat on the Move!
Heat can move in different ways.
Conduction is the transfer, or movement, of heat between two objects that are touching. It can also occur within an object.
Example :
When you hold a snowball, heat
from your hand is conducted
to the snow.
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6. Heat on the Move! Loses heat energy 20 C 0 C gains heat energy
Unit 9 Lesson 3 What Is Heat?
Heat on the Move!
Heat can move in different ways.
Loses heat energy
20 C
0 C
gains heat energy
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7. Heat on the Move! Heat can move in different ways.
Unit 9 Lesson 3 What Is Heat?
Heat on the Move!
Heat can move in different ways.
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8. Heat on the Move! Unit 9 Lesson 3 What Is Heat?
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9. Unit 9 Lesson 3 What Is Heat?
Heat on the Move!
Convection is the transfer of heat within a liquid or a gas.
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10. Convection current Unit 9 Lesson 3 What Is Heat?
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11. Unit 9 Lesson 3 What Is Heat?
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12. Unit 9 Lesson 3 What Is Heat?
Heat on the Move!
Particles in liquids and gases move easily, and they take heat with them.
Movement of particles is from down to up.
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13. Unit 9 Lesson 3 What Is Heat?
Heat on the Move!
Hot air in a hot-air balloon moves from the burner throughout the balloon by convection.(from down to up)
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14. Heat on the Move! Unit 9 Lesson 3 What Is Heat?
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15. Heat on the Move! Unit 9 Lesson 3 What Is Heat?
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16. Unit 9 Lesson 3 What Is Heat?
Feeling Radiant!
Radiation is the transfer of heat without matter to carry it.
Heat from the sun radiates through space and the atmosphere before it warms Earth.
Radiation of heat is done in all directions.
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17. Unit 9 Lesson 3 What Is Heat?
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18. How is heat transferred?
Unit 9 Lesson 3 What Is Heat?
How is heat transferred?
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19. How is heat transferred?
Unit 9 Lesson 3 What Is Heat?
How is heat transferred?
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20. Unit 9 Lesson 3 What Is Heat?
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