Grade 6 CFA Unit 1 Learning Set 1

What is an optical illusion?

• When your brain sees correctly, but your eyes are tricked.

• Images that cause a person to lose their sight.

• When your eyes and brain misinterpret an image.

• When your eyes see correctly, but your brain is tricked.

Which of these is not a condition needed for a person to see an object?

• an eye

• a light source

• a direct unblocked path between the light source and the object

• a direct unblocked path between the object and the eye.

How does light travel?

• Away from a light source, in straight lines, in all directions

• Away from a light source, in straight lines in one direction

• Toward a light source, in straight lines

• Away from a light source, in curved lines, in all directions

A consensus model...

• Shows some components, but not all.

• Shows all important components and is agreed upon by all.

• Shows all components in three dimensions.

• Shows all important components and does not have to be agreed upon.

Which part of the eye opens in dark places and closes in bright places?  

• Cornea
• Retina
• Pupil
• Lens

Tags

NGSS.MS-LS1-8

Which of the following is the correct order in which light travels through the eye?  

• Cornea, Lens, Retina, Pupil, Optic Nerve
• Pupil, Cornea, Lens, Retina, Optic Nerve
• Cornea, Retina, Lens, Pupil, Optic Nerve
• Cornea, Pupil, Lens, Retina, Optic Nerve

Tags

NGSS.MS-PS4-2

A shadow is created when...

• an object blocks the light

• an object lets light pass thru

• an object is above light

Tags

NGSS.5-ESS1-2

We can see things around us because of light reflecting off the object and into our eyes?

• True

• False

Tags

NGSS.4-PS4-2

When was this picture most likely taken?

(Hint: think about the shadow's length)

• morning or evening

• night

• noon

• afternoon

Tags

NGSS.5-ESS1-2

Shadows made by the sun are shorter…

• in the morning while the sun when the sun is rising

• at midday when the sun is directly overhead

• in the evening when the sun is setting

Tags

NGSS.5-ESS1-2