47 terms

5th Grade Science Review

STUDY
PLAY

Terms in this set (...)

rotation
when a planet spins on its axis; gives us day/night
revolution
an object traveling around another object; such as planets around the Sun (orbit)
asteroid
a large chunk of rock that orbits the sun
variable
the one thing in an experiment that changes; what is being tested
control
ALL the things that need to remain the same during an experiment
solar system
planets orbiting a Sun
gravity
an invisible force between two objects (pulls)
star
ball of hot burning gases, come in different colors and sizes; gives off light
MVEMJSUN
8 planets in order
Meteor
chunk of rock burning in our atmosphere--also called a shooting star
reflect
to bounce
refraction
the bending of light when it passes through 2 different states of matter (broken pencil effect)
transparent
material that allows all light to pass through
translucent
material that allows some light to pass through; scatters light
opaque
material that allows NO light to pass through; absorbs or blocks light
convex lens
lens that is larger in the middle, magnifies
concave
lens that is thinner in the middle, allows people to see far away
amplitude
volume of a sound: either loud or soft
frequency
the number of times a sound wave repeats in a certain period of time
pitch
the highness or lowness of sound
medium
material; states of matter (solid, liquid, gas)
high frequency
high pitch (vibrates quickly)
Low frequency
low pitch (vibrates slowly)
absorb
when sound or light is soaked/taken in
force
a push or a pull that causes an object to speed up, slow down/stop or change direction
speed
distance divided by time
weight
the amount that gravity pulls down on a object
habitat
the place where a plant or animal naturally lives or grows
producers
plants, algae or microorganisms that make their own food during the process of photosynthesis
consumers
eat other organisms for energy because they can't make their own food:
Primary Consumer-plant eater(herbivore)
Secondary Consumer-meat eater (carnivore)
Tertiary Consumer- top level of the food chain (carnivore)
decomposers
fungi or bacteria that break down dead organisms
food chain
the path of energy from one organism to another
sun→plants→herbivore→carnivore→
(decomposer)
food web
overlapping food chains within an ecosytem
herbivore (primary consumer)
an animal that eats ONLY plants
**primary consumer
carnivore (secondary consumer)
an animal that eats ONLY meat
**secondary consumer
top level=tertiary consumer
omnivore
an animal that eats BOTH plants and animals
predator
animals that hunt and kill other animals for food
***hunter
prey
a living animal that is hunted and killed
***hunted
ecosystem
a community of living and non-living things that depend upon each other.
abiotic factor
non-living factors in an ecosystem such as soil, air, & weather
biotic factor
The living organisms in an ecosystem such as plants & animals
mutualism
two organisms interacting in a way where both benefit (+,+)
commensalism
a relationship between two organisms where one benefits while the other is neither harmed nor helped (+, o)
parasitism
a harmful relationship between two organisms where one organism benefits by hurting or harming the "host" organism (+, -)
photosynthesis
the process by which plants make their own food: Carbon Dioxide + Water + Sunlight → Sugar (glucose) and Oxygen
volume
loudness or softness of sound
friction
a force that slows down or stops (resists) motion when objects rub together; rough surfaces have more friction than smooth surfaces

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