Year 9 Climate Change

What is the definition of Climate Change?

• A change in the average weather conditions of an area over a long period of time (30 yrs)

• A sudden change in weather for a short period

• A change in the amount of rainfall in a year

• A change in the direction of the wind

Which of the following is NOT a method scientists use to know how the climate has changed?

• Tree Rings

• Ice cores

• Pollen records

• Weather forecasts

Fill in the blank: Scientists measure the concentration of CO2 in bubbles in _______ to work out whether the past climate was warmer or colder.

• pollen records

• tree rings

• fossil bones

• ice cores

A further evidence of climate change in the past is...

• Past glacial erosion e.g. U-shaped valleys

• River erosion e.g. V-shaped valleys

• Recent temperature records

• Coastal erosion e.g. caves

According to the image, global average temperatures have increased by about how much since the industrial revolution?

• About 1.1°C

• About 0.3°C

• About 2.5°C

• About 4.0°C

Which of the following is a natural cause of climate change related to the earth’s orbit?

• Milankovitch cycles

• Enhanced greenhouse effect

• Burning fossil fuels

• Deforestation

Match the following natural causes of climate change with their descriptions:

• Wobble

• The earth’s orbit changes from circular to more elliptical and back again

• Orbital stretch

• The axis of the earth wobbles as it orbits the sun

• Axial tilt

• The earth is tilted at an angle on its axis as it orbits the sun

Which human activity is identified as the main cause of climate change?

• Deforestation

• Burning fossil fuels

• Cows

• Rice farming

Fill in the blank: The enhanced greenhouse effect is caused by excess _______ being added to the earth’s atmosphere by human activity.

• greenhouse gases

• oxygen

• water vapor

• nitrogen

Which of the following is a cause of climate change?

• Seal level rise

• More extreme weather events

• Change in biodiversity

• Burning fossil fuels