Energy

What is energy?

• The ability to not do work

• How we measure time

• How we measure movement

• The ability to do work

How do you know a cup of teas has energy?

• It has tea in it

• It is hot

• It is made with a kettle

• You pour it into a cup

Which of these are types of energy stores?

• Thermal

• Nuclear

• Kinetic

• All of the above

What do we measure energy in?

• Joules

• Watts

• Newtons

• Grams

How many joules are in a kilojoule?

• 10

• 100

• 1000

• 10,000

How many kilojoules of energy is there in 200ml of this fruit juice

• 53

• 224

• 448

• 106

1 calorie is about the same as 4 joules of energy. How much energy (in joules) is there in this pack of biscuits

• 150

• 600

• 200

• 50

How many calories are in this grilled burger?

• 22

• 220,000

• 220

• 2.2

In this experiment what was the independent variable (the thing we measured)?

• Temperature change of the water

• Size of food

• Height of clamp

• Length of tongs

What safety precautions did we have to follow

• Wear goggles to avoid splashes in our eyes

• Put equipment in middle of desk to avoid smashes

• Watch flame at all times

• All of the above