Summer Test

Question 1

Define the term velocity

Answer 1

Velocity is speed in a given direction

Question 2

Define the term acceleration

Answer 2

Acceleration is the change in a velocity in a given time

Question 3

How go we get m/s-2

Answer 3

Final speed -start speed over time taken

Question 4

Define the term speed

Answer 4

Speed is the distance travelled in a certain time

Question 5

How do we get speed(m/s)

Answer 5

Distance over time

Question 6

Define the term carbon sink

Answer 6

A carbon sink stores CO2. Eg forest,oceans,bogs

Question 7

Define the term carbon sources

Answer 7

Carbon sources release CO2. Eg. Volcanes,forest fires, warming oceans and melting permafrost

Question 8

What’s the difference in climate change and global warming?

Answer 8

Climate change has a long-term change in whether was global warming increases the average global temperature due to greenhouse gases

Question 9

Define the term greenhouse gases

Answer 9

Gas in the earths atmosphere trap some of the heat from the Sun escaping into space. These gases include carbon dioxide methane and water vapour

Question 10

Name five sources of CO2

Answer 10

1. Burning fossil fuels.
2. Producing cement.
3. Disposal of household waste.
4. Volcanoes.
5. Respiration.

Question 11

Name four effects of increased CO2 levels

Answer 11

1.global warming which equals heat waves, drought, and crop failure
2. icecaps – glaciers melting equals to sea levels to rise and flooding
3. Warming seas and increasing acidic of them effects aquatic organisms e.g. bleaching of barrier reef
4. Snow/ice reflects his radiation from the Sun if they melt more heat is observed. This accelerate global warming.