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What is a persuasive essay?
It's a short piece of nonfiction writing about one subject.
What is the purpose of persuasive essays?
It is to convince you of something. The author states an argument and supports it with evidence, such as facts and examples.
What do we learn by studying the sky?
We learn about our place in the universe.
How many stars could people see in the night sky 100 years ago?
About 1,500 stars.
Who was the first to notice light pollution problem? What happened?
The astronomers. They began to realize it in the 1970s.
When was the first long-lasting light bulb invented?
In 1879.
What is the population of the United States today?
More than 300 million
What causes light pollution?
It is caused by excess light that is beamed into the sky. It reflects onto low clouds, causing a sky glow that blots out the stars.
According to David Crawford, what can be done to stop light pollution?
He says that lights should point at the ground, not at the sky.
What happens when people use more electricity?
The more electricity people use, the more power plants have to produce. That means more air pollution.
How can light pollution harm birds that migrate at night?
Migratory birds use the stars like street signs to find their way. Bright lights sometimes confuse birds in flight. The birds veer off course.
Why is light pollution bad for female sea turtles?
Turtles do not feel safe on brightly lighted beaches. They won't come to shore to lay their eggs. This affects their reproduction process.
Why do hatchlings need a dark night sky?
They need to crawl to the water. Light coming from the land leads them the wrong way. As a result, the turtles wander into street and parking lots and get lost.
What problem emerged in Snyderville Basin?
It is flooded with light.
What does 'migrate' mean?
To move from one place to another
What does 'pollution' mean?
Was that harms nature.
