We saw a demo of a pencil sitting in a glass of water. When viewed from the side, the pencil appears to be broken. What process causes this to happen?

Which of the following statements is false?

Waves that use matter to transfer energy are called __________________.

What type of waves do not require matter to carry energy?

You see the image of trees on the surface of a calm lake. The image was created by light being

When light can freely pass through a medium, the material is said to be

The matter through which a mechanical wave travels is called a ____________________.

As the wavelength of a wave increases, its energy _______________.

As the wavelength of a wave increases, its frequency ____________.

The ____________________ of a wave is how many wavelengths pass a certain point each second.

A sound wave is produced when an object _______________________.

Sound waves cannot travel through outer space because ___________________________________________.

Which property of light causes a rainbow to form?

Which feature best distinguishes one form of electromagnetic energy from another?

Which type of electromagnetic energy has a shorter wavelength than ultraviolet waves?

Which type of electromagnetic wave has the greatest frequency?

What part of the electromagnetic spectrum can be seen by humans?

Which of the following statements best illustrates the concept that waves carry energy from one place to another?

Mirrors are ____________________ and lenses are _________________.

Why do we see objects as black?

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