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