Vocabulary
Blubber
A thick layer of fat beneath the skin
What animals hibernate?
Bears, bats, squirrels, frogs
50,000
What does the outer coat do?
Blocks sunlight and sheds water
Diminishes
To disappear
A polar bear's heart rate can drop to ___ beats per minute
8
What animals migrate?
Birds, butterflies, fish
What does blubber do?
Keeps you warm
Hibernation
When animals slow their breathing and heart rate during the winter
What do the animals lose a lot of during hibernation?
Body weight
Where do the animals migrate?
What does the undercoat do?
Keeps you warm and dry
Migration
To move or travel to a different area
Why do animals hibernate?
To survive without food
What is the main reason animals migrate?
Because there is not enough food
What is the difference between hibernation and migration?
Hibernation--you are sleeping, you stay in the cold habitat
Migration-you are moving, you go to a warm habitat
Conserve
To protect from harm
Why do the animals need to slow their breathing and heart rate when hibernating?
To conserve their energy.
What do animals who migrate do after the winter is over?
They move back to their original habitat
What are three ways animals survive the cold?
Their fur/blubber, hibernation, migration