Reflection and Refraction

Front

What is refraction?

Back

Refraction is the bending of light as it passes from one medium to another.

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NGSS.MS-PS4-2

Front

What causes light to refract?

Back

Light refracts due to a change in its speed when it enters a different medium.

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NGSS.MS-PS4-2

Front

What is the law of refraction?

Back

The law of refraction, also known as Snell's Law, states that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is constant for a given pair of media.

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NGSS.MS-PS4-2

Front

What happens to light when it passes from air into water?

Back

Light slows down and bends towards the normal line when it enters water from air.

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NGSS.MS-PS4-2

Front

What is the normal line in the context of refraction?

Back

The normal line is an imaginary line perpendicular to the surface at the point of incidence.

Front

How does a hand lens work?

Back

A hand lens works by bending light rays to magnify the appearance of objects.

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NGSS.MS-PS4-2

Front

What is the difference between reflection and refraction?

Back

Reflection is the bouncing back of light when it hits a surface, while refraction is the bending of light as it passes through different media.

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NGSS.MS-PS4-2

Front

What is total internal reflection?

Back

Total internal reflection occurs when light hits a boundary at an angle greater than the critical angle, causing it to reflect entirely back into the medium.

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NGSS.MS-PS4-2

Front

What is the critical angle?

Back

The critical angle is the angle of incidence above which total internal reflection occurs.

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NGSS.MS-PS4-2

Front

How does light travel in a vacuum?

Back

In a vacuum, light travels in a straight line at a constant speed of approximately 299,792 kilometers per second.