"Refraction of Light" Light Phenomenon PPT Courseware 10

Description

"Refraction of Light" Light Phenomenon PPT Courseware 10

1. Open the door to inquiry

Conjecture: When light passes from one medium to another

① Still propagating along a straight line.

②All reflections.

③All incident.

④Part of it is reflected and part of it is incident.

The phenomenon that the propagation direction of light changes when it passes obliquely from one medium into another medium is called refraction of light.

2. Explore and discover

Explore questions:

①What is the positional relationship between refracted ray, incident ray and normal line?

②What is the relationship between the angle of refraction and the angle of incidence?

③What happens to the refraction angle as the incident angle increases?

④ Does the direction of light change when it is vertically incident?

⑤ Is the optical path reversible in the phenomenon of refraction?

The law of refraction:

1. Three lines are coplanar.

2. Normals are centered.

3. If the water is empty, the price will be small, and if the water is empty, the price will be large.

4. The vertical line remains unchanged.

5. The light path is reversible.

application

Assuming that there is no atmosphere on the surface of the earth, then the sunrise time observed by people is compared with the situation when there is an atmosphere.

A.will be brought forward B.will be postponed

C. In some areas it will be brought forward, in other areas it will be delayed D. No change

extracurricular activities

(1) Independently explore the phenomena and rules of light refraction in other different media.

(2) Observe and collect cases related to refraction in real life.

(3) Internet, data query, knowledge about light refraction, pictures and other types of information. See who collects more.

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For more information about the "Light Phenomenon Refraction of Light" PPT courseware, please click the "Light Phenomenon ppt Refraction of Light ppt" tag.

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Update Time: 2024-11-26

This template belongs to Physics courseware Beijing Normal University eighth grade physics volume one industry PPT template

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