Ice Age 1
How did Louis Agassiz come up with the idea about the Ice Age
He saw boulders in the Alps that did not seem to belong in their surroundings
What was the Ice Age?
Very cold period of Earth’s history
Why did the Earth cool as Antarctic ice spread 35 million years ago?
Most of the Sun’s energy reflected off the ice and went back into space
Why were Ice Age animals bigger?
Larger and easier to hold in body heat
What are the Megaloceros, the largest ever species of deer, known as?
Irish elk
Where did people find shelter from the cold?
Caves
What was true of the giant short faced bear?
On two legs, it could reach a speed of up to 40 miles per hour
What was the most famous Ice Age creature?
Woolly Mammoth
Unlike Neanderthals, how did modern humans in Ice Age Europe hunt?
Using spear throwers to hurl long spears at distant targets
How did Louis learn about the Ice Age?
Looking at some rocks
Why is the spine curved in the first Neanderthal skeleton ever built?
It belonged to an elderly Neanderthal who’d suffered from arthritis
What was the continental drift?
Earth’s different sections - plates; movements of continents - slowly
How was some of the cave art at Lascaux made?
Spray-painting from the artist’s mouth
What modern day cities were once under ice?
Seattle, Washington and New York City
When were the Channeled Scablands in Washington State created?
Water burst through its ice dam at speeds up to 65 miles per hour
How much of the world’s largest mammal species has gone extinct since the Ice Age?
65 percent
What happens about every 96,000 years that causes the glaciers to grow?
A change in orbit takes the Earth much farther away from the Sun
How many glacial periods in the last 800,000 years?
Nine
What did the people in London do during the Little Ice Age?
They held “frost fairs” on the thick ice of the Thames River
What connected the two continents of Russia and Alaska during the Ice Age?
Land bridge