the moon the atmosphere the sun
2) What optical tool is used to study small insects - like ants?
microscope telescope
3) What is used to study objects very far away?
4) What is the smallest optical instrument in this list?
telescope eyeglass microscope
5) Which optical tool is used to look at beautiful coloured patterns, and is really only a toy?
microscope telescope kaleidoscope
6) True or false ? Prisms are round pieces of glass.
True False
7) Some expensive binoculars have lenses, mirrors and prisms in them.
True false
8) What are the two types of lenses?
contex, concove complex, conclave convex, concave
9) True or false ? Convex lenses magnify things
10) True or false ? Concave lenses make things appear smaller
11) What does a lens do to light?
it bends it it reflects it it stops it
12) A ...... magnifies objects?
convex lens concave lens complex lens concove lens
13) What type of lens makes things appear smaller?
14) Which lens is fat and thick at the center / centre?
concave convex
15) Which lens is thin at the center / centre ?
concave lens convex lens
16) What is needed to make a lens work?
electricity light
17) What color absorbs the most heat ( light) making something hotter?
black white
18) Pick the correct statement:
Microscopes are used to study the moon and the stars Telescopes are used to study the moon and the stars
19) What can you use to show me how light is defracted?
a mirror a lens a brick
20) What can reflect light?
mirrors polished metal surfaces mirrors and polished metal surfaces
