What is the main idea of this chapter?

Sabiha wrote "Scientists found that heat sources send out infrared waves, too."

What does "heat sources" mean in this quote?

Are there any words or ideas that are still unclear? List them here.

The author wrote "Today, video cameras save this information digitally, meaning it is saved on computer chips."

What does "digitally" mean in this quote?

How many types of displays are discussed in this chapter?

Please enter the first three words of a sentence that shows your answer is correct.

What is the tiny piece of light called that make up big screen TVs?

Please enter the first three words of a sentence that shows your answers is correct.

To view the online text for this chapter, click here!

What is the main idea of this chapter?

The author wrote “Your remote control uses infrared waves to communicate with your TV.”  What does “communicate” mean in this quote?

Sabiha wrote “Scientists found that heat sources send out infrared waves, too.”  What does “heat sources” mean in this quote?

What does the picture of the dog show?

How much faster are ultra–violet waves than infrared waves?

Which conclusion makes sense given the information in this chapter?

Were there any ideas or words that were unclear in this chapter?

What does a smartphone’s camera do?

Please enter the first three words of a sentence that shows your answers is correct.