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3-1 Heat and temperature (3.1)
Heating things up (3.1)
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Slide 1:
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Natuurkunde
Middelbare school
havo, vwo
Leerjaar 2
In deze les zitten
20 slides
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interactieve quizzen
en
tekstslides
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Lesduur is:
50 min
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Heating things up (3.1)
Slide 1 - Tekstslide
Discovering
(p 98)
make questions 1 up to 6
The big idea here is: how can you conduct a reliable experiment
You have 7 minutes
Slide 2 - Tekstslide
Slide 3 - Tekstslide
Slide 4 - Tekstslide
Slide 5 - Tekstslide
LESSON GOALS
- How does insulation work
- How do we heat up a house and a body
- How can we use geothermal energy
Slide 6 - Tekstslide
How do you keep warm?
Insulation
- People use a coat.
- Animals use their fur,
feathers or a layer of fat.
- We colse the door of a
heated room.
Slide 7 - Tekstslide
Whales
- Layer of fat/ 'whale blubber'
- Tongue and fins are thinner,
because there is less fat.
- Blood is cooled down
when it goes to the tongue.
- The heat is passed to the cold blood returning back to the
body
Slide 8 - Tekstslide
Heating up a house
Central heating can use natural gas or electricity.
Sun heats up a house.
A fireplace does the same.
Slide 9 - Tekstslide
Slide 10 - Tekstslide
Body
Food is the most important source of energy.
When you loose heat your body needs extra energy to stay at the right temperature.
Slide 11 - Tekstslide
Geothermal energy
The temperature of the earth centre is about 5 500 C
The outer layers of the earth act as insulation.
On average the temperature increases by 3 C for every 100 m.
Iceland -
uses geothermal energy as an energysource.
Slide 12 - Tekstslide
Which is NOT an energy source?
A
Food
B
Alcohol
C
Central heating system
D
Petrol
Slide 13 - Quizvraag
In a cold environment you use more food than in a warm environment.
A
True
B
False
Slide 14 - Quizvraag
Fuels are energy sources.
A
True
B
False
Slide 15 - Quizvraag
Double glazing lets more heat through than single glazing.
A
True
B
False
Slide 16 - Quizvraag
Heat is always needed to make electricity.
A
True
B
False
Slide 17 - Quizvraag
Questions
2-7
Rules: No discussion
When you are done-
Look for more information online about the role of geothermal energy
Slide 18 - Tekstslide
Conclusion
Insulation prevents heat loss
Energy sources provide energy
Energy sources are: the Sun, fuels such as natural gas, wood and petrol, and also food
Slide 19 - Tekstslide
timer
0:02
Slide 20 - Tekstslide
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