Physics Unit 7 Day 3 - Polarization

Distinguish between an umbra and a penumbra.

• umbra is the darkest part of a shadow, penumbra is only partly darkened

• penumbra is the darkest part of a shadow, umbra is only partly darkened

• they are the same thing

Tags

NGSS.MS-ESS1-1

Distinguish between a solar eclipse and a lunar eclipse.

• In a solar eclipse the moon passes between the Earth and the Sun. In a lunar eclipse the moon moves into the Earth's shadow.

• In a lunar eclipse the moon passes between the Earth and the Sun. In a solar eclipse the moon moves into the Earth's shadow.

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NGSS.MS-ESS1-1

Which type eclipse is dangerous to your eyes if viewed directly?

• Lunar Eclipse

• Solar Eclipse

• Eclipse of the Heart

What is the difference between light that is polarized and light that is not?

• polarized light vibrates along multiple planes; unpolarized light vibrates along a single plane

• there is no difference

• polarized light vibrates along a single plane; unpolarized light vibrates along multiple planes

Why is light from a lamp or candle frame nonpolarized?

• The electrons are vibrating in one direction

• The electrons are vibrating in random directions

• The electrons are not moving

• They emit polarized light

In what direction is the polarization of the glare that reflects from a horizontal surface?

• Horiztonal

• Vertical

• Diagonal

• Nonpolarized

Tags

NGSS.MS-PS4-2

How do polarizing filters allow each eye to see separate images in the projection of 3-d movies?

• No one really knows...

• Each glasses lens is polarized the same and two polarized images are projected onto the screen

• Each glasses lens is polarized 45 degrees from the other and two polarized images are projected onto the screen

• Each glasses lens is polarized 90 degrees from the other and two polarized images are projected onto the screen

Tags

NGSS.MS-PS4-2