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15
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How many kilojoules equal 1 kilocalorie?
4.2 kJ
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15
×
Is energy a substance that moves from one object to another?
No, it’s a way to keep track of a quantity.
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15
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What happens if you eat less energy than you need?
body uses stored fat and you lose weight
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lifesaver
Give 25 points!
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star
Double points!
Okay!
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fairy
Take points!
5
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25
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baam
Lose 10 points!
Oops!
15
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Which activity uses the least energy per minute?
sitting – 6 kJ
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15
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What is the unit of energy?
joule (J)
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15
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What is the energy content of cooked chicken per 100 g
800 kJ
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15
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Which food in the table gives the most energy?
chocolate – 1500 kJ per 100g
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thief
Give points!
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25
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shark
Other team loses 25 points!
Okay!
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gift
Win 20 points!
Okay!
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thief
Give points!
5
10
15
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25
15
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What old unit was used for measuring energy in food?
kilocalorie or kcal
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15
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How many joules are in one kilojoule?
1000 J
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15
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How much energy does playing football use each minute?
59 kJ
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15
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Which activity uses the most energy per minute?
swimming – 73 kJ
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15
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What other things can we use stored energy for?
heating rooms, cooking food, boiling water, etc.
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15
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Who needs more energy: an athlete or a person who sits all day?
athlete
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baam
Lose 25 points!
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shark
Other team loses 10 points!
Okay!
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shark
Other team loses 5 points!
Okay!
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baam
Lose 15 points!
Oops!
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