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Definition
pieces that make up a whole |
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Definition
a giant ball of gas that produces light and heat (our Sun) |
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- consists of a star and all objects that travel around it
- includes a central star (our Sun) and planets, moons, asteroids, meteoroids and comets that travel around it
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Definition
planets that are the closest to the Sun, made mostly of roc and metal
(Mercury, Venus, Earth, Mars) |
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Definition
also known as the gas giants
(Jupiter, Saturn, Uranus, Neptune) |
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Definition
made mostly of rock and ice
(dwarf planet) |
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Definition
Mercury, Venus, Earth, Mars,
Jupiter, Saturn, Uranus,
Neptune, Pluto |
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a measure of how much material an object contains |
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- an object that travels around a larger object in space.
- all our planets are satellites of our Sun
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the pathway a satellite takes as it travels around an object |
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Definition
is a satellite of a planet |
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Definition
is a push or pull of an object |
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is a force that exists between all objects and keeps us on the ground |
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Definition
- force of gravity causes object to be attracted to one another
- the gravitational attraction between the Sun and the planets keeps them from flying off into space
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Definition
- Newton's First Law of Motion
- an object at rest tends to stay at rest and an object in motion tends to stay in motion
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Term
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Definition
- the force between two surfaces rubbing together.
- HIGH when surfaces are dry and rough
- LOW when surfaces are smooth and wet
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Term
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Definition
closed curve with all points along the curve with the same distance |
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Definition
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ellipses have two centers |
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farthest orbit from the sun |
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Definition
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Definition
imaginary line going through the center of the Earth from pole to pole |
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Definition
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Northern Hemisphere
- tilted toward Sun = Summer
- tilted away = Winter
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Term
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Definition
one complete turn of a planet
on its axis |
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Term
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Definition
time it takes for any planet to make one complete rotation on its axis |
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Definition
planets travel around the
Sun in their orbits |
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Term
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Definition
one complete orbit of a planet around the Sun |
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the time it takes a planet to travel around the Sun once |
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Definition
1) new moon; 2) waxing crescent;
3) 1st quarter; 4) waxing gibbous;
5) full moon; 6) waning gibbous;
7) 3rd quarter; 8) waning crescent |
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Term
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Definition
the Sun, the Earth and the moon are all in line together. Two primary types: Solar and Lunar |
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Definition
when the moon travels between the Sun and the Earth, blocking the Sun's light from Earth.
(Can only occur during
NEW MOON phase) |
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Definition
| the moon moves into the shadow of the Earth during nighttime hours, gradually blocking the n.ew of the moon from Earth |
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Definition
very small, rocky planet that
orbits the sun |
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Definition
a pice of meteor that
REACHES Earth |
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Definition
- collection of gas, dust and ice that travels around the sun.
- shines because of sunlight reflecting off the ice
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consists of all the galaxies and all other matter and space around them |
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Definition
swirling cluster of stars - many shaped like gigantic pinwheels.
(consist of billions of stars) |
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Definition
our home galaxy, our Sun is one of an estimated 100 billion stars |
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Definition
distance that light travels in a year |
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stars that are grouped into a pattern
(Big Dipper, Orion) |
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| the study of myths (stories that are passed down from ancient times that depict both real and fictitious events, peope and animals). |
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Term
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Ursa Major or
the Great Bear |
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Definition
Ursa Minor or
the Little Bear |
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Definition
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Canis Major or
the Big Dog |
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Why does a meteor or
a shooting star glow? |
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Definition
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