Science Definitions

Question 1

Transparent
Translucent
Opaque

Answer 1

Transparent- materials that allow light to past through or no reflection
Opaque- materials that do not allow light to pass through

Question 2

Umbra

Penumbra

Answer 2

Umbra -fully shaded region of a shadow

Penumbra - the partially shaded region of a shadow formed by some light passing an opaque object

Question 3

1) Reflection

2) Refraction

Answer 3

1) the throwing back by a body or surface of light, heat, or sound without absorbing it.
2) change in direction of light as it travels from one material to another

Question 4

1) specular reflection

2) diffuse reflection

Answer 4

1) reflection off smooth surface

2) reflection of light off an uneven surface and makes the light scatter in many different directions

Question 5

1) real image

2) virtual Image

Answer 5

1) an image that appears on the same side of a concave mirror as the object
2) an image that appears to be on the other side of the location, light rays do not pass through the image location

Question 6

Incidence

Answer 6

A ray of light is incidence towards a plane mirror

Question 7

Concave

Convex

Answer 7

Concave - having an outline or surface that curves inward like the interior of a circle

Convex- an object that’s shaped like a dome

Question 8

Visible light spectrum

Answer 8

Colours of visible light which can be seen by the eye , the colours seen in a rainbow or when light is split by a prism

Question 9

Electromagnetic radiation

Answer 9

All form of radiation energy visible light, infected radiation radio wave, x-ray etc

Question 10

Wavelength

Answer 10

Distance between the top or peak of one wave to the peak of the next

Question 11

Ray

Answer 11

A direct straight line that represent the path followed by the light

Question 12

Illuminance

Answer 12

The amount of light arriving at one place per unit area

Question 13

Lenses
Retina
Pupil
Iris

Answer 13

Lenses-price of glass or other transparent material that either brings together or spreads light rays passing through it
Retina- special lining on the back of your eye
Pupil- opening in the eh that lets in light
Iris- band of muscle in your eye that controls the size of pupil and the amount of light entering your eye

Question 14

Diaphragm
Aperture
CCDmatrix

Answer 14

Diaphragm- part that changes the size of the aperture of camera lens
Aperture- a hole gap or opening
CCDmatrix- Charged Coupled Device cells in a camera which has the similar function as the retina

Question 15

Myopia

Hyperopia

Answer 15

Myopia- lack of imagination, foresight, or intellectual insight

Hyperopia- farsightedness