Science- lesson 1 & 2- Sun- Earth- Moon// Solar System
An object that ________ the Sun, is massive enough to be nearly __________ in shape, and has no other large object in its orbital path is called a(n) _________
orbits spherical planet
Earth is one of eight ___________ orbiting the ________ in our solar system
planets sun
A(n) ___________________ is the orbit of an object around another object.
revolution
The closer a planet is to the Sun, the faster it ________
revolves
The Moon ______________ on it axis and _____________ around thee Earth in 27.3 ____________.
rotates revolves days
The daily rising and falling levels of the oceans and other large bodies of water are called ______________, which are caused by ____________________ pull of the Moon and the Sun
tides gravitational
The most distant planet is ___________ which is about 30 AU from the Sun; however the solar system includes billions of small, icy objects in orbit around the __________ as far as __________ AU away
Neptune Sun 50,000
_____________ and Neptune appear to be blue because of the amounts of the gas _______________ in their atmospheres.
Uranus Methane
A full rotation for Earth takes how many hours?
24
How many days does it take the Earth to orbit the Sun?
365.25
There are _______ inner planets - in order from the Sun, they are _______, _______, ______, and _______.
4 Earth, Mercury, Venus, and Mars
There are ________ outer planets -- in order from the Sun, they are ________, ________, _______, and __________
4 Jupiter, Saturn, Uranus, and Neptune
Small, rocky objects that orbit the Sun are called _________ there are many of these objects in the __________________ belt between the planets Mars and __________.
asteroids asteroid Jupiter
The tilt of the Earth's ____________ toward or away from the Sun is the cause of ____________on Earth?
axis seasons
____________ and _______________ is caused by the spin motion of an object around its own axis is called ______________.
Day night rotation
A(n) ________________ between Earth and another planet-sized object might have thrown a large amount of ___________ into orbit around Earth, which gravity pulls together, forming the ___________.
collision debris moon
When the Moon is between Earth and the Sun, the half of the Moon facing Earth is in ____________ and the phase is a(n) _______________ moon; over the next two weeks, we say the Moon is __________________.
darkness new waxing
All 8 planets revolve in the same ____________ around the Sun.
direction
The other objects in the solar system formed from leftover gas and ________ pulled by gravity into a(n) __________.
dust disk
Objects that ______________ the Sun and are nearly spherical in shape, but they share their orbital paths with other objects of similar size are called ________________.
dwarf planets
On two days during the year, called ______________ one at the beginning of the spring and the other at the beginning of the fall, Earth's axis does not ____________ toward or away from the Sun.
equinoxes tilt
The solar system formed from a cloud of ________ and dust that pulled together due to the _______________.
gas force of gravity
The outer planets re made up mainly of ___________ and other materials that have ________________ boiling points.
gas high
The inner planets all formed from _________ elements, have few or no _______ and ________ more slowly than the outer planets.
heavier moons rotate
A bulge of water forms at the two places on Earth that are closest to and farthest from the Moon, and these places have ___________ tides.
high
The ____________ planets are the planets closest to the Sun; they are all _________ because when the solar system was forming, the areas closer to the _____________ were very _______ and the gases were blown away.
inner rocky Sun hot
These planets are ___________ than the inner planets, have systems of __________, have many __________ and have thick atmospheres.
larger rings moons
A meteoroid that passes through Earth's atmosphere produces a streak of _________ and is called a(n) ___________.
light meteor
If a meteoroid reaches Earth, it is called a(n) ________
meteorite
Solid bits of debris that travel through the solar system are called _____________
meteoroids
A natural satellite that orbits an object other than a star is called a(n) _____________.
moon
Although we don't sense its motion, Earth is ______________ rapidly through space.
moving
As the moon orbits ______________ , the visible part of the Moon reflecting the Sun's light seems to change ___________; these shapes are called the ______________ of the Moon
Earth shape phases
The average distance between ___________ and the Sun is about 150 million km, which is called a(n) _____________________ (AU).
Earth Astronomical Unit
During a lunar eclipse, people on Earth see ______________ shadow partially or completely cover the ____________.
Earth's Moon
When Earth is between the Moon and the Sun, the half of the Moon facing Earth is completely lit up and the phase is ___________ moon; over the next two weeks, we say he Moon is _____________.
Full waning
What is the reason the moon orbits the Earth and the Earth orbits the Sun?
Gravity
The largest planet in the solar system is ______________.
Jupiter
____________ and objects that are too small to be classified as planets make up the solar system
Planets
____________ is the only planet that has rings that are easy to see.
Saturn
The movement of one solar system object into the _________________ of another solar system object is a(n) _______________.
Shadow Eclipse
During a(n) __________________ eclipse, people in the ______________ shadow on Earth see the Moon partially or completely cover the __________________.
Solar Moons Sun
On two days during the year, called the ________________, one at the beginning of the summer and one at the beginning of _______________, Earth's ___________ tilts most toward or away from the Sun.
Solstice winter axis
The location of the __________ relative to the _______________ can cause an increase or decrease in the level of the tides.
Sun Moon
The ____________ is made up of the Sun and everything that ________it
solar system orbits
Objects in our ________________________ orbit the Sun due to the Sun's huge mass and ________________ pull.
solar system gravitational
The Sun is one of billions of __________ in the Milky Way, which is one of billions of ___________ in the universe.
stars galaxies
The __________ is a star that formed at the _____________ of the solar system.
sun center
Small, icy objects that orbit the Sun and develop _________ as they get close to the Sun are called ________
tails comets