Topic 5B: Introduction To Climate Change

Question 1

What is “Climate Change”?

Answer 1

A significant change in the weather of a region spanning over several decades

Question 2

What is “Global Warming”?

Answer 2

The Rapid increase of global temperature over the last century

Question 3

What are the 3 types of evidence for Climate Change?

Answer 3

1. Temperature Records
2. Dendrochronology
3. Pollen in Peat Bogs

Question 4

How is Dendrochronology used as evidence for Climate change?(3)

Answer 4

• Approximately 1 ring forms every year
• The rings get thicker due to a warmer climate
• Together scientists can count back and pinpoint a certain climate for different time points.

Question 5

How are peat bogs used as evidence for Climate change?(4)

Answer 5

• Pollen is preserved in Peat bogs over the years.
• Peat bogs accumulate in layers
• Scientists Identify the pollen species
• Scientist know the preferred climate of plant species today

Question 6

How are temperature records used as evidence for Climate change?(3)

Answer 6

• Temperature measured around the world using thermometers since the 1850s
• Gives reliable but short term recored of global temp

Question 7

Explain why only pollen from succesful plant species is preserved in peat bogs

Answer 7

Only fully grown plant species produce pollen