5Th Grade Science

Front 1

energy

Back 1

the ability to do work or cause a change in matter

Front 2

electromagnetic radiation

Back 2

the energy given off by the Sun

Front 3

visible light

Back 3

the type of E-M radiation that you can see

Front 4

light wave

Back 4

a disturbance that moves away from its starting poing

Front 5

vacuum

Back 5

a region that is empty of any matter

Front 6

wavelength

Back 6

the distance from one crest of the wave to the next crest

Front 7

frequency

Back 7

the number of waves produced each second

Front 8

hertz

Back 8

the unit by which wave frequency is measured

Front 9

reflection

Back 9

the bouncing back of light from a surface

Front 10

plane mirror

Back 10

a mirror with a flat surface

Front 11

concave mirror

Back 11

curves inward at the middle

Front 12

convex mirror

Back 12

curves outward at the middle

Front 13

refraction

Back 13

bending of light as it passes from one material into another

Front 14

lens

Back 14

a transparent object with at least one curved surface. They come in a variety of shapes, but all types refract light that passes through them

Front 15

convex lens

Back 15

a lens that is thicker in the center than it is at the edges

Front 16

focal point

Back 16

a convex lens brings parallel light rays together at a point known as ________ point.

Front 17

concave lens

Back 17

a lens that is thicker at the edges than at its middle

Front 18

retina

Back 18

the light-sensitive layer at the back of the eye

Front 19

contact lenses

Back 19

clear, thin lenses that are placed on the eye in front of the cornea, invented in 1965

Front 20

refracting telescope

Back 20

this telescope uses lenses that refract light to make an image

Front 21

reflecting telescope

Back 21

with this telescope, light strikes a mirror and is reflected to a focal point

Front 22

Leeuwenhoek's simple microscope

Back 22

a microscope that had only one lens that was held between two metal plates

Front 23

compound microscope

Back 23

a microscope that uses two convex lenses

Front 24

electron microscope

Back 24

this microscope uses a beam of electrons instead of a beam of light

Front 25

opaque

Back 25

means an object that light does not pass through

Front 26

transparent

Back 26

objects that let light pass through

Front 27

trnaslucent

Back 27

objects, such as frosted glass and wax paper, that let light pass through, however, light does not follow one straight-line path through the material, it is scattered in many directions

Front 28

filters

Back 28

colored materials that absorb some colors of light and let others pass through

Front 29

vibrations

Back 29

back-and-forth movements of matter

Front 30

sound

Back 30

a form of energy that you can hear and that travels through matter as waves

Front 31

compression

Back 31

the region where the sound wave particles have been pushed closer together

Front 32

rarefaction

Back 32

the region of sound waves where there are fewer particles than normal

Front 33

crests

Back 33

the up-and-down wave of a sound waves have ____________that represent compressions, or regions of greater air pressure

Front 34

troughs

Back 34

sound waves have ____________ that represent the rarefactions, or regions of lower air pressure

Front 35

wavelength

Back 35

the distance from one compression to the next in a sound wave

Front 36

frequency

Back 36

the number of complete sound waves produced in a unit of time, such as a second

Front 37

amplitude

Back 37

the _______________ of a sound wave is the distance from rest to a crest or from rest to a trough

Front 38

overtones

Back 38

softer, higher tones that are mixed with the basic tone

Front 39

timbre

Back 39

the special sound produced by a musical instrument

Front 40

Thomas Edison

Back 40

created a light bulb using a carbon filament made from a burned thread

Front 41

an image that is larger than the object, such as with shaving and make-up mirrors

Back 41

What kind of image is created by a concave mirror?

Front 42

an image that is smaller than the object, such as side-view mirrors on cars

Back 42

What kind of image is created by a convex mirror?

Front 43

an image that is smaller than the object, but the image formed is always right side up. This image is made from a lens that is thicker at the edges than at its middle.

Back 43

What kind of image is created by a concave lens?

Front 44

the image that is formed is small, it is also upside down. This image is made by a lens that is thicker in the center than it is at the edges. This lens brings parallel light rays together at a focal point.

Back 44

What kind of image is created by a convex lens?