HEAD BANGER

Use the article “The Truth About Woodpeckers” (p. 8) to answer the questions below.

Which of the following is the BEST example of kinetic energy?

• a bird flying through the air

• A compressed spring

• A hammer sitting on a table

• A woodpecker about to hammer a tree.

Use the article “The Truth About Woodpeckers” (p. 8) to answer the questions below

. Which of the following observations would have led scientists to conclude that woodpeckers DO have shock absorbing skulls?

• The woodpecker’s head slowing down just before hitting the tree

• The space between the bird’s skull and beak compressing upon impact

• The bird’s beak bouncing back quickly after hitting the tree

• The woodpecker’s whole head moving stiffly in a single unit, like a hammer

Use the article “The Truth About Woodpeckers” (p. 8) to answer the questions below.

Why would having shock-absorbing skulls be a disadvantage for woodpeckers? Choose all that apply

• The birds’ brains would experience more impact when they hammer a tree.

• The force of their beaks hitting a tree would be weaker.

• The birds’ beaks would get stuck in the tree as they peck

• The birds would need to exert more energy while hammering a tree.

Pg 16

What is the function of the ligatures in braces?

• To join teeth together

• To protect the surface of the teeth

• To attach the brackets to the surface of the teeth

• To secure the wire to the brackets

pg 16

Which of the following is the best definition of an alloy?

• A flexible metal

• A strong metal

• A mixture of metals

• A Nickle-Titanium metal

pg 8

Which of the following is not true about the Navajo code?

• It allowed messages to be sent faster than messages from coding machines.

• enemies were never able to break the code.

• It was more likely to introduce errors than messages made by coding machines.

• It had to be memorized by the code talkers.

pg 8

Encryption and cryptography both share a root word: crypt. What do you think crypt most likely means?

• Confusing

• Secret

• Unbreakable

• Transmitted by radio

all of book

Which of thee things did Benjamin Franklin not invent?

• Electricity

• Bifocal glasses

• Swim fins

• The glass harmonica

all of book

Which of the following statements about Atlas moths is true?

• These ;moths are some of the largest in the world

• They are native to Southeast Asia

• These moths can have a ten-inch wingspan.

• All of the selections are true

all of book

What is the purpose of the antenna on the ECHO robot?

• To count any penguins it sees

• To detect if nearby penguins have a tracking chip

• To receive instructions from scientists

• To take photos of the penguins