Sources
Name of main natural light source for Earth
Sun
Name a household object that is a VERY good reflector of light.
Mirror
What type of object makes the best shadow?
Opaque
A plane mirror is curved or flat?
Flat
If an object reflects blue light only we will see - ?
The object as blue.
Name of artificial light sources campers use
Torch
T/F - We see objects as different colours because they reflect different parts of light spectrum into our eyes.
True
What type of object makes the worst shadow?
Transparent (see through)
A concave mirror curves inwards or outwards?
Inwards
A light source is any object that....
gives off/emits light
Glow worms, fire flies, bioluminescence are examples of
Natural light sources
Black objects absorb/reflect/refract almost all of the spectrum.
absorb
Shadows form because light travels in ________ _____ so it cannot curve around opaque objects.
straight lines
What word best describes a convex mirror - flat like a pancake, curved inwards like a cave, curved outwards like a mound?
a mound
Which of these is the odd one out and why? sun, moon, lamp, torch
Moon is not a light source it is reflector.
Lamps, phone screens and light boxes are examples of
Artificial light sources
White objects absorb/reflect/refract all colours of the spectrum.
reflect
T/F - Smaller, clearer shadows form when the object is further from the light source and closer to the screen.
True
Convex mirrors are good for security and carparks?
They give a wide view
What is needed to form a rainbow?
Light source and water (or something transparent to refract/bend) the light.
What word starting with L describes objects that give off their own light?
Luminous
Why do we see green objects as green and red objects as red?
Green only reflect green light and red objects only reflect red to our eyes.
3 things needed to make a shadow.
Light source, opaque object, screen
Concave mirrors are good for make up mirrors and dentist mirrors because up close they?
create a big, enlarged, clear image.
Rainbows form when white light bends as it goes through a transparent object. What science word could replace bends?
refracts/refraction