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SciFest Science Challenge
Save the planet
Answer the questions below by placing a  in the correct box.
1. Approximately how many people are there on the planet today?
70 million


700 million
7 billion (7 000 000 000!)

2. Just over 100 years ago, there were no motor vehicles like cars, trucks and buses. Today, there are millions, all
polluting the air and killing tens of thousands of people (and other animals) each year in accidents. How many
million motor vehicles do you think there approximately were in 2010?
20 million


100 million

700 million
1000 million

3. Traffic (planes, cars, etc.) pump out gases such as carbon dioxide which causes smog and leads to the greenhouse
effect. How much, approximately, of this gas do you think is made every year by traffic?
1000 kg


34 000 kg

23.9 million kg
1.4 million kg

4. There are over 4600 different types of mammal (elephants, whales, mice, etc.) in the world and lots of them are in
danger of becoming extinct because of people killing them directly, poisoning them with pollution or destroying
where they live. How many will be extinct within the next few years if people don't do something right away?
None

23

over 1150

520

5. How much fuel (oil, coal, petrol) on average do you think each European (man, woman and child) uses each year?
25 litres

220 litres

330 litres

Name: ________________________________________ Stand Number: __________________________
.................................................................................................................................................................................
SciFest Science Challenge
Save the planet
Answer the questions below by placing a  in the correct box
1.
Approximately how many people are there on the planet today?
70 million

700 million

7 billion (7 000 000 000!)

2. Just over 100 years ago, there were no motor vehicles like cars, trucks and buses. Today, there are millions, all
polluting the air and killing tens of thousands of people (and other animals) each year in accidents. Approximately
how many million motor vehicles do you think there are now?
20 million

100 million

700 million

1000 million

3. Traffic (planes, cars, etc.) pump out gases such as carbon dioxide which causes smog and leads to the greenhouse
effect. How much, approximately, of this gas do you think is made every year by traffic?
1000 kg

34 000 kg

23.9 million kg

1.4 million kg

4. There are over 4,600 different types of mammals (elephants, whales, mice, etc.) in the world and lots of them are in
of becoming extinct because of people killing them directly, poisoning them with pollution or destroying where they
live. How many will be extinct within the next few years if people don't do something right away?
None

23

over 1150

520

5. How much fuel (oil, coal, petrol) on average do you think each European (man, woman and child) uses each year?
25 litres

220 litres

330 litres

Name: ________________________________________ Stand Number: __________________________