Understanding Goose Bumps

Doug explores why humans and animals get goose bumps when cold. He explains that goose bumps occur when tiny muscles at the base of hair follicles contract, causing hair to stand up. This reaction is more beneficial for animals, as it helps trap heat. For humans, it is a vestigial reflex. Doug compares this phenomenon in cats and birds, showing how their fur and feathers puff up to retain warmth. The video concludes with a call to vote on the next topic to explore.

Why did Doug put his arm in the freezer?

• To test a new freezer

• To get goose bumps on purpose

• To see how long he can withstand the cold

• To find a lost item

What inspired the term 'goose bumps'?

• The color of a goose's feathers

• The sound a goose makes

• The texture of a goose's skin without feathers

• The way geese walk

What happens to the hair on human skin when goose bumps occur?

• The hair curls

• The hair stands straight up

• The hair changes color

• The hair falls out

Why do animals' hair or feathers stand up when they are cold?

• To make them look bigger

• To scare off predators

• To help them stay warm

• To attract mates

How do scientists measure the effect of puffing up on animals?

• By using a thermometer

• By counting the number of hairs

• By observing animal behavior

• By measuring the animal's weight

What is a common observation about birds in the morning?

• They are often puffed up

• They are very active

• They are hard to find

• They sing loudly

What is the effect of puffing up on the air around an animal's body?

• It makes the air humid

• It warms the air

• It cools the air

• It dries the air

What is the main reason humans get goose bumps?

• To regulate body temperature

• As a leftover trait from ancestors

• To improve skin texture

• To signal danger

What is the purpose of the video series?

• To entertain viewers

• To answer scientific questions

• To promote a product

• To teach cooking

Which of the following is NOT a future topic mentioned?

• Why do stars twinkle?

• How do plants grow?

• Could a turtle live outside of its shell?

• Why are rubies red?