Module 10 week 2

Which sentence best describes the relationship between dolphin calves and their mothers?

• Calves leave their mothers shortly after birth.

• Calves have to work hard to gain their mothers’ attention.

• Calves learn basic skills by imitating their mothers’ behavior.

• Calves spend much of their time staying still and watching their mothers.

The narrator says that when fish hear dolphins, they “run for cover.”

How does the video help viewers understand what this means?

• by showing fish diving suddenly into the sand

• by showing fish hiding behind plants and large rocks

• by showing fish changing color to blend in with their surroundings

• by showing fish gathering in big groups to make themselves hard to catch

Which sentence best summarizes how dolphins use hydroplaning to find food?

• Dolphins take turns watching for fish, which gives them time to rest.

• Dolphins dive deep under the water, looking for fish that others can’t reach.

• Dolphins listen for echoes from their voices, which tell them where fish are hiding.

• Dolphins swim quickly along the water’s surface, grabbing any fish that cross their paths.

Which sentence best summarizes how dolphins use hydroplaning to find food?

• Dolphins take turns watching for fish, which gives them time to rest.

• Dolphins dive deep under the water, looking for fish that others can’t reach.

• Dolphins listen for echoes from their voices, which tell them where fish are hiding.

• Dolphins swim quickly along the water’s surface, grabbing any fish that cross their paths.

What is one way that dolphins “show off” the fish they catch?

• by tossing the fish in the air

• by eating the fish in front of others

• by sharing the fish with their families

• by keeping the fish close to where they sleep

What is echolocation?

• a way that mother dolphins make sounds to give instructions to baby dolphins

• a type of sonar system, where dolphin noises bounce back to them

• a kind of mirroring that teaches young dolphins basic skills

• a way for dolphins to lure fish out of the sand

People and animals that __________ for themselves survive without help.

• fend

• status

• cowered

• benefit

__________ is the level of importance a person or animal has within its social group.

• Status

• Cowered

• Benefit

• Clan

A ________________________ is a group of people or animals who are usually members of the same family.

• clan

• restore

• reconcile

• enabled

Baby dolphins are born with the ability to mimic whatever their mother does.

• True

• False