Question

imagine waiting for a bus on a street corner. its a cold day, the bus is late, and you feel chilled. heres what happens.
a control center in your brain senses that youre cold. it sends a message down the spinal cord to all the nerves. the message races through nerves that connect to other nerves. then it goes from the nerves to the muscles. the message says, “warning! prepare for action!”
when a muscle moves, it makes heat. that is why you get warm when you run or play soccer. when your muscles get the signal that you are cold, they get busy. first they become tight, then they loosen. they tighten then loosen over and over again. this makes you shiver. you also get warmer.
______ 6. your brain’s signal travels first to the
a. bus c. heart
b. spinal cord d. muscles
______ 7. nerves tell the muscles to
a. stop c. get ready
b. relax d. cool down
______ 8. when a muscle moves, it becomes
a. warm c. stiff
b. cool d. heavy
______ 9. when you become cold, your muscles
a. relax c. stop moving
b. stretch d. tighten and loosen
______10. when you shiver, you get
a. weaker c. stronger
b. colder d. warmer

Explanation:

1. The text states "It sends a message down the spinal cord to all the nerves", so the brain's signal first travels to the spinal cord.
2. The text says "The message says, 'Warning! Prepare for action!'", which means nerves tell muscles to get ready.
3. It is mentioned that "When a muscle moves, it makes heat. That is why you get warm when you run or play soccer", so a moving muscle becomes warm.
4. The text indicates "When your muscles get the signal that you are cold, they get busy. First they become tight, then they loosen. They tighten then loosen over and over again", so cold - muscles tighten and loosen.
5. The text clearly states "This makes you shiver. You also get warmer", so when you shiver, you get warmer.

Answer:

1. B. spinal cord
2. C. get ready
3. A. warm
4. D. tighten and loosen
5. D. warmer