Vocabs

Question 1

Light

Answer 1

a range on the electromagnetic spectrum that is visible to human eyes.
made of photons.
contain traits of waves and particles.

Question 2

electromagnetic spectrum

Answer 2

visible light is a small portion of broad family of electromagnetic waves

Question 3

infrared

Answer 3

electromagnetic waves (light) that is before visible light in the electromagnetic spectrum

Question 4

ultraviolet

Answer 4

electromagnetic waves (light) that is after visible light in the electromagnetic spectrum

Question 5

color

Answer 5

different frequencies of light that eyes detect and send them to the brain as colors.

Question 6

color receptors

Answer 6

known as cones S, M, L each sensitive to a different range of color frequencies

Question 7

pigment

Answer 7

a material which selectively absorbs certain wavelengths of light and then reflects other wavelengths.

Question 8

transparency

Answer 8

materials that allow light to pass through; i.e. water and glass

Question 9

opaque

Answer 9

materials that does not let light through

Question 10

shadow

Answer 10

light is stopped by an object before hitting something else, creates shadow in the area it doesn’t reach

Question 11

umbra

Answer 11

complete shadow, no light is going through

Question 12

penumbra

Answer 12

partial shadow, some light is going through

Question 13

polarized

Answer 13

vibration back and forth in only one direction

Question 14

3d vision

Answer 14

lens in eyes changes to focus on far or near objects allowing for depth perception.
stereoscopic vision: having 2 eyes give 2 povs allowing for better depth perception

Question 15

reflection

Answer 15

when reach the boundary of a material, it can be reflected

Question 16

incident wave

Answer 16

the wave before it reaches the boundary

Question 17

reflected wave

Answer 17

wave after bounced off boundary

Question 18

Law of Reflection

Answer 18

angle of reflection is equal to angle of incidence

Question 19

refraction

Answer 19

when wave crosses a boundary b/w mediums and bends in a new direction

Question 20

diffuse reflection

Answer 20

when light is reflected off a very jagged surface producing a blurred image

Question 21

specular reflection

Answer 21

light is reflected off a smooth surface creating clear images

Question 22

real images

Answer 22

when light converges in space to create an image, can be projected

Question 23

virtual images

Answer 23

when light does not converge in space, can only be seen by looking through the len or mirror that created the image

Question 24

plane mirrors

Answer 24

flat mirror,
always create virtual images.
create images that are same size + distance the object is from the mirror

Question 25

concave mirrors

Answer 25

reflective surface is on the inside of the curve )

Question 26

convex mirrors

Answer 26

reflective surface is on the outside of the curve (