Screen Time Can Mess with the Body's Clock

According to “Screen Time Can Mess with the Body’s ‘Clock,’” what is the purpose of melatonin? Choose two options.

• It gets the body ready to sleep.

• It makes the body alert and restless.

• It tells the body that darkness has fallen.

• It increases the body’s resistance to sleep.

• It helps the brain awaken from a deep sleep.

In “Screen Time Can Mess with the Body’s ‘Clock,’” the author describes a study comparing the effects of reading on an electronic device before bed with the effects of reading printed books. What were the effects of reading on the electronic device? Choose three options.

• People took longer to become alert the next morning.

• People had deeper sleep.

• People awoke feeling more rested.

• People took longer to fall asleep.

• People felt more tired in the morning.

What concern did lighting scientist Mariana Figueiro express about the study in Boston, as explained in 'Screen Time Can Mess with the Body’s ‘Clock’'?

• The results might not apply in real life.

• The scientists involved did not look at all the facts.

• The study might not lead people to change their behavior.

• The information could cause a drop in the sale of tablet computers.

Choose the most likely meaning of previously as it is used in this passage from 'Screen Time Can Mess with the Body’s 'Clock.' Use context clues to help you.

• with great interest

• in a friendly way

• at an earlier time

• at the same time

Part A: What was the author’s most likely purpose for writing “Screen Time Can Mess with the Body’s ‘Clock’?

• to explain possible effects of using certain electronic devices before trying to sleep

• to describe the effects of too much sleep on the way people feel during the day

• to persuade people that electronic devices are better than print books

• to explain why many people have stopped reading print books

Use context clues to determine the most likely meaning of environment as it is used in this quotation by sleep researcher Anne-Marie Chang in 'Screen Time Can Mess with the Body’s ‘Clock.’'

• beliefs

• reasons

• beginnings

• setting

What is the main theme of the article 'Screen Time Can Mess with the Body's Clock'?

• The impact of screen time on sleep patterns

• The benefits of using electronic devices

• The history of electronic devices

• The importance of maintaining a balanced diet

Which word best describes the tone of the article 'Screen Time Can Mess with the Body's Clock'?

• Persuasive

• Informative

• Humorous

• Sarcastic

In the context of the article, what does the term 'body's clock' refer to?

• A physical clock worn by the body

• The body's natural sleep-wake cycle

• A new type of electronic device

• A method for tracking time

What literary device is used in the title 'Screen Time Can Mess with the Body's Clock'?

• Metaphor

• Simile

• Alliteration

• Personification