How can we help?

You can also find more resources in our Help Center.

90 terms

SCIENCE EXAM

STUDY
PLAY
astronomy
the study of stars and hevenly bodies to learn more about them
astrology
the study of stars to predict the future
rotation
the act of rotating as if on an axis
revolution
when a hevenly body goes around anthor hevenly body
star
a ball of hot glowing gas
our nearest star
SUN
SUN
93 million miles away. light from sun reaches Earth in 8 minutes medium star
three ways a star is medium
size, temperature, and age
stars give off
heat, cosmic rays, x rays, light, energy, ultra violot rays, and radio waves
2 ways telescopes help study stars
stars are brighter and more stars are seen.
obsevatory
a domed shapes building with a telescope to study real stars
plantarium
a domed theater with a projector for studing fake stars
radio telescope
a telescope that picks up radio waves from very different stars
double star ( binary star)
2 stars that orbit each other and look like one
cepheid ( regular varible)
a star that changes from bright to dim in a pattern
nova
a star that suddenly becomes thousand of times brighter
super nova
a star that suddenly gets very bright and explodes
thermocouple
an instument used to find the temperature of stars
spectroscope
an instrument that uses a prism to find the elements of a star
constellation
A group of stars that appear to form a picture in the sky
nebula
a large cloud of dust and gas in space
star cluster
a group of hundreds or thousands traveling together in space
Cassiopeia
fall
all year
Draco
north on a clear night
Thuben, tanin
Canis Major
south
winter
Sirius
Aurigu
north
fall
capella
Tarus
east
fall
Aldebran
Orion
south
winter
Betelgeuse and Rigel
Gemini
Stright up
winter
Pollox Caster
The Big Dipper
north
all year
pointer stars
The Little Dipper
north
all year
Polaris
Leo
in spring
Regulus
Bootes
south
spring
Arcturus
cancer
south
spring
scorpus
south
spring
Antares Shalua
Two types of nebula
bright and dark
examples of a bright nebula
crab, orion, butterfly, and the witches hat
examples of a dark nebula
horse head, colsack, cone, and the tower
two types of star clusters
open and globular
examples of a open star cluster
pleiades, beehive kids and the jewel box
examples of a globular star cluster
M13
Galaxy
a group of billons of stars, planets, nebule, and dust
three types of glaxies
spril, elipical, and irrelgular
our nearest glaxy
Andromedia
Universre
All the glaxiers and the space in between them
the big band theroy
A mass of matter blew up. this crreated the glaxies. they are still moving away from each other today.
cell
the smallest part of a living thing
cell wall
the rigid structure that gives plant cells their shape.
cell membrane
the thin layer that hold the cell together and lets substances in and out of a cell
cytoplasm
the watery gel inside a cell that holds the various parts
nucleus
center of the cell contols activites
chromosones
structures that hold the DNA inside the nucleus
vacuoles
spaces in the cytoplasm that store food and water
mitocondria
structures that release energy from food
chloroplasts
green parts in a plant cell that contain chlorpphyll
chlorophyll
the green sustance that plants use to make food.
protist
a large group of mostly single celled organisms that have traits of animals, plants, or both
protozoa
protists with animal like traits
algea
protists with plant like traits
the amoeba facts
protozoan
lives in fresh water
no definate shape
no front or back
neither male nor female
3 d
the amoeba can
move with falsefeet ( pseudopod)
eat surronds it food
reproduce dividing
breath cell membrane
respondes to things food and light
eliminates waste cell membrane
the paramecium facts
protozoan
lives in fresh water
definate shape
front or back
neither male nor female
3 d
the paramecium can
move with cilla
eat mouth
reproduce dividing
breath cell membrane
respondes to things food and light objects in its way
eliminates waste anal pore
the euglena facts
protist
lives in fresh water
definate shape
front or back
neither male nor female
3 d
the euglena can
move flagellum
makes food clorplasts
eats with gullet
uses eyspot find sunlight
reproduces mitosis
sybiosis
a close relationship between two species that helps at least one of them
three types of sybosis
mutualism commesalism parasitism
mutualism examples
both are helped cleanerwrasset and bigger fish
commesalism and examples
one is helped and the other not affected orchid and tree
parasitism
one is helped and the other is harmed ticks
parasite
an organism that lives in or on another organism to get food and harms it
host
the organism that is providing food for the parasite
monerans
one celled organisms without a necleus
bacteria
monerans that feed on living things or dead materal
three kinds of bacteria
rod spiral sherical
blue-green bacteria
monerans that contian chorophyll that makes its own food
bacteria reproduce by
fission
virus
tiny bit of genitc materal wrapped in a capsule of protein
immune system
body's system of defense against disease
communicable desease
a disease that passes from one host to another bty direct or indirect contact
toxins
chemical posins harmful to the body
antibodies
protiens that attach to bacteria and virusand destroy them
antibotic
medicine that stops the reproduction of bacteria
vaccine
a mixture of dead or weakend microbes that causes the body to produce antibodies
tissue
similar cell grouped together
organ
similar tissues grouped together
system
similar organs grouped together
habitat
the place where an animal gets what it needs slatwater
adaptation
characteristics of an animal that helps it survive and reproduce in its habitat
examples of adaptions
body parts camofloge bright warning colors and behavior mimicry