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Evidence cards. Mobile phones cause health problems.
Mobile phones produce microwaves
Microwaves make water molecules move faster
The body contains lots of water
Some people who live near mobile phone masts complain of headaches
Research shows that there is an increased chance of users getting tumours in the part of brain next to the ‘phone’ ear.
Microwaves can penetrate the skull of a young child.
A small proportion of users develop cancer.
Raised temperatures destroy brain cells
Medical scans show that microwaves affect the brain.
Evidence cardsExercise is good for you
Exercise speeds up your heart rate
Exercise makes you breathe faster
People who exercise regularly
have a lower resting heart rate
Exercise strengthens the heart muscle
Overweight people are more likely to have heart attacks
My games teacher says it is
Exercise makes you feel better
People who exercise daily live longer, on average
Most athletes are slim
Joggers can suffer heart attacks when they are running
People who exercise have greater muscle
mass
Exercise reduces your chances of
heart disease
Evidence cards.Carbon dioxide causes global warming.
More carbon dioxide is being produced and the world is warming up.
Venus is very hot and it has a thick carbon dioxide atmosphere.
Animals breathe out warm carbon dioxide and other gases.
Hot carbon dioxide is given out when fossil fuels are burned
Carbon dioxide turns limewater milky
Carbon dioxide reacts with water to form carbonic acid.
Experiments show that carbon dioxide retains heat more than oxygen
Methane contains carbon and it has been proved that methane is a greenhouse gas
The ozone hole above the Antarctic is getting bigger
Sunlight increases the number of organisms in a food chain
Energy stored in living things is passed on when they are eaten
Lots of animals live in Africa.
My teacher says it’s true so the chances are that it’s right.
Plants are an essential part of food chains
There aren’t many living things at the North Pole.
More animals live on the equator than at the North Pole
More people live in sunnier climates.
Sunshine provides energy for plants to make food.
Plants don’t thrive in shady areas.
Evidence cards Smoking is bad for you
More smokers than non-smokers die of heart disease.
Cigarettes make your breath smell.
Cigarettes contain nicotine.
Smoking can make you feel relaxed.
The Government taxes cigarettes and makes them expensive.
A significant proportion of people who smoke develop lung cancer.
Women who smoke have a greater chance of having low birth-weight babies.
Increasing numbers of young people are beginning to take up smoking.
Smoking is banned from many public places such as restaurants and offices.
Nicotine is addictive
Many people who smoke develop bronchitis
Photographs show that sticky tar forms in the lungs of smokers
Evidence cardsThe Earth rotates on its axis
The Moon moves across the sky
It’s cold at nightDaylight hours are
shorter in the winter
Hong Kong has dawn 8 hours before the UK
It’s warmer at the equator than at the poles
It takes 365 ¼ days for the Earth to orbit
the Sun
The Sun rises in the East and sets in the
West
Water goes down the plughole clockwise in
the Northern hemisphere but anti-clockwise in the
Southern Hemisphere
A day is 24 hours long
Stars move across the night sky in a circular
path
Some birds fly south in winter
On a midsummer’s day there are 12 hours of day and 12 hours of
night
Evidence cardsMatter is made of particles
Atoms have been seen very powerful scanning tunnelling
microscopes
Smoke particles move around in a random way when you watch them
under a microscope
Balloons will pop if they get too hot
Gases can be squashed into
smaller volumes
Most materials expand when heated
Balloons inflate when you blow air
into them
You can see air particles in bright
sunlight
I’ve seen a picture of particles in my science book
Air resistance increases when you
go faster
Salt dissolves in water
All matter can be separated into smaller bits
Sand is matter and sand is made of
particles
Evidence cardsThe Earth is round
When a ship sails towards you the mast appears first.
If you travel west you eventually return to the place you started from.
The Earth looks spherical when viewed from space.
The Earth has a magnetic field
My textbook states that the earth is round
The sun travels across the sky in the same direction every day
The shadow of the earth during a lunar eclipse is round.
The moon and sun are round so the earth is almost certainly round
Toy shops sell globes of the earth.