Effects of Screen Time on Sleep

What is the main topic of the article?

• How to use screens for fun

• How evening screen time can affect sleep

• The history of sleep studies

• Different types of screens

What does the article say about blue light from screens?

• It helps people fall asleep faster and have better sleep quality.

• It has a negative impact on your eyesight.

• It can interfere with the body’s sleep signals.

• It makes screens brighter.

Which hormone is mentioned as important for sleep?

• Insulin

• Melatonin

• Adrenaline

• Dopamine

According to the article, what happens when melatonin levels are low?

• People feel more awake and alert.

• People fall asleep more easily.

• People get hungry.

• People feel sleepy.

What advice does the article give to improve sleep?

• Use screens right before bed.

• Avoid screen use at least an hour before bedtime.

• Turn the screen brightness to the lowest

• Watch TV instead.

How does the author connect the idea of screen use to sleep problems?

• By explaining that screen light affects a hormone that controls sleep.

• By telling a story about a person who sleeps well.

• By comparing the brightness of the screens.

• By listing different types of screens and their effect on sleep.

Which of the following best describes the central idea of the article?

• Avoid using any electronics so that you can have a better sleep.

• Melatonin makes you stay awake and lead to health problems.

• Evening screen time can increase your melatonin and lead to better sleep.

• Evening screen time can disrupt the body’s natural sleep cycle.

What supporting detail does the author use to explain why screens affect sleep?

• Blue light from screens increases melatonin production.

• Blue light from screens decreases melatonin production.

• Blue light from screens stops melatonin production.

• Blue light from screens doesn't affect melatonin production.

How does the author develop the central idea throughout the article?

• By comparing different groups of people's experience of screen time.

• By explaining the science behind blue light’s effect on melatonin, then showing how this disrupts sleep, and finally offering advice to reduce screen use.

• By explaining the science behind blue light’s effect on melatonin, then showing how this improves sleep, and finally offering advice to increase screen use.

• By comparing different brands of screens.

Which of the following best explains the cause-and-effect relationship presented in the article?

• Using screens causes people to feel happier because they have more fun.

• Exposure to blue light in the evening causes melatonin suppression, which leads to difficulty falling asleep and poorer sleep quality.

• Sleeping more causes people to use screens less because they have less free time.

• Cell phones, computers and TVs emit blue light.