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Science Grade 7
Galaxies, Stars, Solar System, Dwarf Planets, Meteors, etc.
35
Science
7th Grade
01/20/2023

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Cards

Term
star
Definition
an object in space made of gases in which nuclear fusion reactions occur that emit energy.
Term
nuclear fusion
Definition
atoms combining and releasing large amounts of energy.
Term
enormous
Definition
very great in size or amount
Term
solar system
Definition
the sun and eight planets that revolve around it
Term
Nebula
Definition
Cloud of gas and dust
Term
What is Gravity's role in the formation of stars?
Definition
gravitational attraction between particles is how stars are formed.
Term
accumulate
Definition
to gather together more and more things
Term
orbit
Definition
to move around another object
Term
The closer a planet is to the ________ the faster it moves
Definition
sun
Term
galaxy
Definition
huge collections of stars
Term
symmetrical
Definition
having two halves that are exactly the same shape and size
Term
galaxies that are oddly shaped
Definition
irregular galaxy
Term
astronomer
Definition
a scientist who studies stars, planets and other objects in space
Term
telecscope
Definition
device shaped like a long tube that helps you see things that are far away
Term
How do astronomers observe the solar system?
Definition
using a telescope
Term
detect
Definition
to identify the presence of something
Term
optical
Definition
relating to light or the way we see things
Term
diameter
Definition
the length of a line passing from one side of a circle to the other thru the center
Term
astronaut
Definition
a person who travels and works in space
Term
inner planets
Definition
Closet to the sun: Mercury, Venus, Earth and Mars they are made of solid rocky materials.
Term
outer planets
Definition
farthest from the sun: Jupiter, Saturn, Uranus and Neptune, They are made of ice and gases
Term
What was the first optical telescope called
Definition
Hubble space telescope
Term
mission
Definition
a flight or trip to perform a specific task
Term
acquire
Definition
to get or be given
Term
sphere
Definition
something in the shape of a ball
Term
classify
Definition
to place into groups based on the way they are alike
Term
dwark planets
Definition
Plute, makemake, cere, haumea are smaller then the earths moon
Term
what is the smallest dwarf planet
Definition
Ceres
Term
what is the largest dwarf planet
Definition
Eris
Term
meteoroid
Definition
small rocky particles that move thru space
Term
meteorite
Definition
a meteoroid that strikes a planet or a moon
Term
How did the solar system form?
Definition
when gravity pulled a cloud of dust and gas together to form our solar system.
Term
Ellipse
Definition
contains two fixed points called a Foci (Focus)
Term
Describe the path of Earth if the Sun’s gravity were to suddenly stop
Definition
Earth would travel in a perfectly straight line at 30 km/s
Term
why Earth has fewer moons than Jupiter.
Definition
Because of Gravity. Jupiter is larger and closer to the sun
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