Investigating God's world lesson 3.1, investigating god's world lesson 3.2, investigating God's world lesson 3.3, investigating God's world lesson 3.4, investigating God's world lesson 3.5
samples of reflectors
-bike reflectors -cat's eye -planets -clock you can see in the dark -mirror -moon
samples of opaque
-book -corkboard -chair -milk -moon
samples of luminous
-campfire -firelies -flashlight -jack-o-lantern -glowworm -light bulb -lightning -stars -sun
samples of translucent
-frosted glass -waxed paper -clouds
what is a shadow?
a spot of darkness cast by an opaque object
translucent
allow light to pass through but not considered transparent, gives diffuse or scatter the light
transparent
allows light to pass straight through it
artificial light: made by man
any material heated to a high temperature will give off light examples: torches, incandescent bulb
an instrument that enables scientists to see distant objects
binoculars
What are the cool colors?
blue, green, violet
Reflection
bouncing back of light
main idea of this section
color is important in our world
lenses that scatter light rays
concave
a lens that is thicker at the edges than in the middle
concave lens
describe what concave and convex mirrors do to light?
concave spreads light while convex focuses light
lenses tha focus light rays
convex
a lens that is thicker in the middle than at the edges
convex lens
concave
curving inward, makes things look bigger
convex
curving outward, make things look smaller
explain how the incandescent bulb works?
electricity is sent through the wire, it heats up and begins to glow with bright light
focus
gathering them together in one place
explain how a periscope can make light turn corners.
it makes light travel around corners by using mirrors that reflect light from one another
main idea of this section
light rays are bent as they pass from one type of material to another
luminous
produces its own light
Which color has the longest wavelength?
red
what are the warm colors?
red, orange, yellow
name the colors of the spectrum in the order that they always appear.
red, orange, yellow, green, blue, violet
bending of light rays
refraction
what is the difference between the headlight on your bike and the reflector?
the headlight of the bike makes you see clearly infront while the reflectors let other know your location.
Which color has the shortest wavelength?
violet
samples of transparent
-air -clear plastic -glass -water
natural light: God's gift
1. luminous animals such as firefly, glowworm 2. lightning flashes
name five types of artificial lights
1. torches 2. candles 3. kerosene lamps 4. flashlight 5. incandescent bulb
what is the speed of light?
186,000 miles per second through space
why does a green object look green?
Because it absorbs most of the colors of the visible spectrum but reflects only green light.
how did Galileo improve Lippershey's telescope?
By using one convex lens and once concave lens instead of two convex lenses which enable distant objects to be seen right side up
what is the importance of light to you?
It enables us to see
who made the first telescope?
Hans Lippershey
why does light not travel around corners?
Light always travels in a straight line
who invented the reflecting telescope?
Sir Isaac Newton
who invented the electric light bulb?
Thomas Edison
an instrument that enables scientists to see tiny objects
microscope
what is the difference between natural light and artificial light?
natural light are God's creation and artificial light are created by man.
opaque
not letting light through