10 questions
From Tim's explanation about interglacial periods, what can you conclude about the prefix "inter-?"
It means "between"
It means "cold"
It means "age"
It means "glacier"
How is a glacier different from an ice sheet?
Ice sheets are colder than glaciers
Glaciers are moving rivers of ice; ice sheets are immobile slabs
Glaciers form in the Northern Hemisphere; ice sheets form in the Southern Hemisphere.
Ice sheets form during interglacial periods; glaciers form during ice ages
Which of the following creatures could be described by the term "megafauna?"
How are glaciations different from ice ages?
Ice ages are longer and more intense
Glaciations are shorter and more intense
Ice ages are shorter and less intense
Glaciations are longer and less intense
What can you conclude from the fact that animals that live in the tropics have been known to live in areas currently covered in ice?
There used to be many more animals alive on the earth in the past than there are today
Over many millions of years, the earth's climate has been extremely dynamic
The tectonic plates connecting Canada and the United States were once separated
Animals that used to be warm-blooded have evolved into cold-blooded animals
Which word best describes the pattern of ice ages throughout Earth's history?
Random
Unpredictable
Cyclical
Unknown
If you wanted to take a core sample of an ice sheet, what would you need?
A glacier
A very large freezer
A thermometer
A special drill
Which of the following geologic features was created by glaciers?
The Mojave Desert
The Great Lakes
The Rocky Mountains
The Gulf of Mexico
How can movement of the continents lead to climate change?
It can block the flow of warm ocean currents
It can shift the earth's rotation about its axis
It can make slight changes to the earth's orbit
It can cause glaciers and ice sheets to begin moving as well
How is the current era of warming different from the warm periods the earth has experienced in the past?
Right now, the earth is warmer than it's ever been
In the past, warming was tied to rising CO2 levels in the atmosphere; right now, the level of CO2 is falling
The current era of warming has likely been caused by human activity
The current era of warming is simply part of the natural cycle