13. Climate Change CGP The Evidence

The ................. period is the current geological time period

The current geological period spans from about ........... years ago to the present day.

• 1.5million

• 2.6million

• 3.2million

The Quaternary period includes the whole of human history

• False

• True

One of the limitations of using .............. records from thermometers to investigate past climate change is that only short-term records exist i.e. from 1850 to the present day.

During the Quaternary period , temperature has shifted between cold .............. periods and warmer interglacial periods.

How long do cold glacial periods last compared to warm interglacial periods?

• Cold glacial periods 10,000 years

  Warm interglacial periods 100,000 years

• Cold glacial periods 10,000 years

  Warm interglacial periods 1,000 years

• Cold glacial periods 100,000 years

  Warm interglacial periods 10,000 years

When did the last glacial period end?

• 15,000 years ago

• 30,000 years ago

• 45,000 years ago

Since the last cold glacial period the climate has been .............

What is different about the last 150 years?

• There has been a gradual rise in global temperatures

• There has been an unusually sharp rise in global temperatures

• Global temperatures have been falling

As a tree grows it forms a new ring every year; the tree rings are thicker in ........., wet conditions