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Science - Year Seven > Fuels, Calories and Energy > Flashcards

Flashcards in Fuels, Calories and Energy Deck (26)
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1

How can we measure calories?

We can measure calories using a device called a calorimeter.

2

What are fossil fuels and how are they made?

Dead organisms, plants and animals get buried over time, sedimentary rock slowly builds up over these fossils. Without oxygen the fossils very slowly turn into coal and oil.

3

If a food is low in calories is it a high energy food or a low energy food?

A low energy food. The higher the calories, the higher the energy the food contains.

4

If a food has under 500 calories then is it a low, medium or high energy food?

Under 500 calories is a low energy food

5

If a food has between 500 to 1000 calories is it a low, medium or high energy food?

Between 500 to 1000 calories is a medium energy food.

6

If a food has over 1000 calories is it a low, medium or high energy food?

Over 1000 calories is a high energy food

7

How many calories does the average adult need to survive a day?

An adult needs 2,000 calories to live

8

Which of the following is NOT a fossil fuel?

Coal
Oil
Gas
Wind

Wind

9

Fossil fuels are formed from:

Water
Electricity
Dead plants and animals
Rocks

Dead plants and animals

10

Electricity is not a fuel because it is:
Easy to switch on a and off
It cannot be used to make cars run
If had been generated using other energy resources
It can burn you

It has been generated using other energy resources

11

Which of the following is NOT true
Energy can be used to heat things
Energy can be destroyed
Energy can be changed
Energy can be wasted

Energy can be destroyed

12

Why do we need to save energy?
To pay for new cars
Fossil fuels are running out
Electricity is running out
To pay for new cars

Fossil fuels are running out

13

Which of these would NOT help us to use less energy for transport?
Using a car that could go further for every litre of petrol
Using a bus instead of going by car
Always using the car for short journeys
Walking to school

Always using the car for short journeys

14

How could we save energy on heating our homes?
Keep the house warmer and open the windows
Keep the house cooler and wear a jumper
Make sure we leave the heating on when we are out
Turn the heat up at night, so we don't need blankets on the bed

Keep the house cooler and wear a jumper

15

Which of these things might happen if you walked to school instead of going by car?
You might get wet is it rained
It might take you longer to get to school
You would be healthier and fitter
All of them

All of them

16

Which is true?
Renewable energy resources will not run out
Non-renewable energy resources will not run out
None of our energy resources will run out

Renewable energy sources will not run out

17

Which of these is a non renewable energy resource?
Solar
Wind
Natural gas
Moving water

Natural gas

18

Which statement is true?
Solar panels are used to generate electricity
Solar cells and solar panels are the same
Solar cells are used to generate electricity
Solar cells are used to heat wate

Solar cells are used to generate electricity

19

Biomass is:
A heavy weight
Any fuel made from plant or animal material
Fuel made from plant material only
Fuel made from animal material only

Any fuel made from plant or animal material

20

Our bodies get the energy they need from:
Food
Water
Warm clothes
Hot baths

Food

21

The units for measuring energy are:
Horsepower
Degrees
Joules
Newtons

Joules

22

People who dig holes on the road he a lot of energy in their food because:
They have long tea breaks
They always forget their sandwiches
They sometimes have to work in the rain
They use a lot of energy while they work

They use a lot of energy while they work

23

You can find out how many energy is in a peanut by:
Burning it and seeing how hot it make a test tube of water
Eating it and seeing how full you feel
Weighing it
Seeing what colour it is

Burning it and seeing how hot it makes a test tube of water

24

Plants get their energy from
Water
Fertiliser
The sun
The soil

The sun

25

Which statement is true?
Coal has energy because it is black
Fossil fuels have energy because the animals that became fossils ran around a lot
Coal has energy because it is warm inside the earth
The plants that formed coal got their energy from the sun

The plants that formed coal got their energy from the sun

26

What are Calories?

Calories are the measure of the energy content of food