polluted rivers/ mountains

Many rivers, villages, towns and cities were built near rivers so that people could make use of the water.

• True

• False

• I have no idea.

Rivers are polluted by the following things.

• Oxygen and carbon dioxide

• chemical waste from factories.

• Untreated sewage from homes, schools and factories.

The green plants found on top of some rivers are called..

• Algae

• Green grass

• sun flower

Acid rain is produced by ....

• coal, oil and petrol burned in factories.

• Women baking bread

• People who smoke

Acid rain kills fish and other wildlife in rivers and lakes.

• False

• True

• Not so certain.

ways to prevent pollution.

• Having strict laws that make it illegal to pollute rivers.

• Making factories and mines pay to clean up rivers.

• Close many factories.

• Stop driving cars.

The river Thames is found in which country?

• Saudi Arabia

• France

• England

• Portugal

Mountains are areas of high ground that rises more than 300 meters.

• True

• False

• Not sure

Topographic maps show the natural features of the land, such as hills, mountains, lakes and rivers.

• True

• False

• None of the above

What are contour lines used for?

• Show heights

• Join places with the same height

• Tell us about the slope of the land.

• Shows the size of a country.