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26 Cards in this Set
- Front
- Back
- 3rd side (hint)
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what is light? |
light is produced by luminous objects, such as fires, electric lamps and stars like the sun. |
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what do convex mirrors look like? |
convex mirrors curve outwards, they reflect light outwards. |
out |
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what is the light called that we can see? |
visible light! |
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what light can we not see? |
ultraviolet light and infrared. |
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what is opaque? |
when light canot trael through object such as brick walls |
walls |
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what is transparent? |
objects that light can travel trough such as windows and glass |
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What is are Translucent objects? |
Things such as paper that we can sort of see through but not very clearly. |
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what is the normal? |
a line at 90 degress to the surface of a mirror. |
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what is the incident ray? |
a ray of light going to the mirror. |
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what is a refelcted ray? |
a ray that comes off the mirror. |
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what is the angle of incidence? |
the angle of incidence is between the incident ray and the normal. |
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angle of reflection? |
is the angle between the reflectwed ray and the normal. |
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what is the focus? |
the part where that reflected ray meets. |
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what is convex? |
convex mirrors curve outwards, they reflect light outwards. |
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refraction is? |
when waves speed up slow down by the water and are bent. |
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what do concave lenses do? |
they spread out parrallel, always produce a vitual image |
thinner in the middle. |
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what is the focal length? |
the distance between the lens to the pricipal focus. |
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what is the total internal reflection? |
when light passes from a dense material to a les dense material (eg water to air) |
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what is covalent bonding? |
involves non- metal atoms bonding with other non-metal atoms. |
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what is a molecule? |
a group of 2 or more non-metallic atom bond together. |
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what makes white? |
all colours. all 7 colours. |
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what is another name for diverging lenses? |
concave lenses |
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what sort of lenses produce smaler upright images? |
concave |
C |
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what image is formed when we look through a magnifying glass? |
a virtual image? |
V****** I |
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why is a diverging lense called a convex lense? |
because is spreads out parallel rays f light |
spreads |
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why is concave light called converging lens? |
because it brings parallel rays of light. |
brings |
