.....................is between Mercury and Earth.
Venus
....................is the eighth planet.
Neptune
The particles in the protostar were mostly hydrogen and helium. T or F
T
A ,............ is the distance light can travel in one year.
lightyear
A ................is a large hole in the ground on the surface of a planet or a moon.
crater
The atmosphere of Mars is mostlty carbon dioxide.true or false
true
The Sun lights up half of the surface of Earth and the Moon. true or false
true
Rocky planets have much moons. T or F
F
The solar system is tiny in comparison to the rest of Earth’s galaxy,,..T or F
T
........................the men who study space and objects in space.
Astronomers
................is the seventh planet from the Sun
Uranus
days) Moon rotates once on its axis about every 27 Earth days true or fasle
true
A star and the objects that move around it make up a..........................
solar system
the features of the Saturn are prominent rings made of ice and rock. T or F
true
The pull that holds the solar system together is,.............
gravity
A ...............is an object that orbits a planet.
moon
,...............is a pulling force between objects.
Gravity
the closer the distance between objects, the stronger the pull...... t o r f
T
5. An object that orbits a planet is a ...............
moon
dwarf planets are smaller and share their orbits with other objects. T or F
T
The light-year is a measurement that is large enough to describe the scale of distances between our solar system and nearby stars..............true or false
T
The planets were formed from matter that was swept up from their............
orbits
,................is the smallest planet.
Mercury
astronomical unit is equal to the distance between Earth and the Sun.............true or false
true
earth revolves, or orbits, once around the Sun every year (365 _ 14_ days) true or false
true
,...............is the fourth planet from the Sun.
Mars
..............is the largest planet in the solar system.
Jupiter
Bodies that orbit the Sun all have elliptical orbits....true or false
true
The heat and light that warm Earth’s surface come from the .........
sun
,................is a that revolves around Saturn.
Titan
It is the hottest planet in the solar system.........
Venus
The more massive an object, the Weaker the pull of gravity.......T or F
F
To understand how large or far away something in the solar system is, astronomers use many different...........................
scales
....................is growth by the gradual accumulation of layers.
Accretion
The....................... is based on how far Earth is from the Sun.
astronomical unit
Asteroids are mostly unchanged from the early days of the solar system...T or f
T
The.................... is the group of asteroids between Mars and Jupiter.
asteroid belt
................is the second-largest planet
Saturn
Earth rotates once on its axis every day (27 hours) true or false
false
The Sun, Earth, and the rest of the solar system formed from a.........
nebula
revolves once around Earth about every 27 Earth days. is..........................
the moon
It is the largest object in the solar system.....................
sun
the atmosphere of Jupiter is thick and made mostly of hydrogen and helium. true of false
true
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