MPW/EQI

11.f.21 Heat energyUnit2

lesson 2Temperature and

heat energyNovember 2010 slide 1

1. What is heat energy?

2. What is the difference between temperature and heat energy?

3. What is the unit of heat energy?

4. How does heat energy affect me?

Key Questions

November 2010 slide 2MPW/EQI

1. What is heat energy?

Heat energy is energy moving from a hotter place to a colder place.

Key Questions

November 2010 slide 3MPW/EQI

Assignment : Heat energy and temperature

November 2010 slide 4MPW/EQI

The amount of heat energyin an object depends on three things: its temperature, its mass, and the material it is made from. A tank full of hot water at 60 °C contains moreheat energy than a cup full of water at the same temperature because there is more water in it. A cup full of water at 50 °C contains less heat energy than the same mass of water at 100 °C because the water is at a lower temperature.

2. What is the difference between temperature and heat energy?

The heat energy of an object depends on its temperature, its mass and its material.

Key Questions

November 2009 slide 5MPW/EQI

Assignment : Heat energy and temperature

November 2009 slide 6MPW/EQI

2 Look at the diagrams below and circle the one of each pair that has the most heat energy in it. In each case, explain your answer.

a large bowl of porridge at 30 °Csmall bowl of porridge at 30 °C

The bowl on the left has more mass.

Assignment : Heat energy and temperature

November 2010 slide 7MPW/EQI

2 Look at the diagrams below and circle the one of each pair that has the most heat energy in it. In each case, explain your answer.

b small pan of soup at 80 °Cthe same size pan of soup at 50 °C

The pan on the left has a higher temperature.

Assignment : Heat energy and temperature

November 2010 slide 8MPW/EQI

2 Look at the diagrams below and circle the one of each pair that has the most heat energy in it. In each case, explain your answer.

c a small mug of coffee at 80 °Ca large mug of coffee at 80 °C

A larger mug has more mass

Assignment : Heat energy and temperature

November 2010 slide 9MPW/EQI

2 Look at the diagrams below and circle the one of each pair that has the most heat energy in it. In each case, explain your answer.

d a pot full of tea at 85 °Cthe same amount of tea at 95 °C

The pot on the right is warmer.

3. What is the unit of heat energy?

The unit of heat energy is the Joule.

Key Questions

November 2010 slide 10MPW/EQI

4. How does heat energy affect me?

When a large mug takes longer to cool down than a small mug. It is the reason metal feels colder than wool.

Key Question

November 2010 slide 11MPW/EQI

Experiment : Heat energy and temperature

November 20010 slide 12MPW/EQI

thermometerbeakerwatergauzetripod

heatproof mat