The main asteroid belt can be found between the orbits of
Question 49
49.
The majority of asteroids in our solar system are found in the
Question 50
50.
Question 51
51.
An asteroid belt divides
Question 52
52.
Due to their small size, asteroids do not have enough _________________ to pull themselves into the shape of a ball.
Question 53
53.
Question 54
54.
Question 55
55.
The term 'asteroid' means _____.
Question 56
56.
Question 57
57.
Question 58
58.
When a rocky body (piece of an asteroid) is still is in space it is called a _______ . When the piece enters Earth's atmosphere and burns up (often called a shooting star although it is not a star) it is a _______ . If the object does land on Earth it is called a _______ .
Possibly the most famous comet, Halley’s, has a period of
25 years
30 years
50 years
75 years
100 years
Comet _____________ was an unusually bright comet that flew by Earth, reaching its closest approach to the planet in 1997. It was probably one of the most viewed comets in history.
Churyumov
Hale-Bopp
Shoe-maker
Tempel-Tuttle
A meteoroid is dragged to Earth by ______________; it burns up due to _________ with the atmosphere.
friction. vaporization
gravity, vaporization
Centrifugal force, sublimation
Gravity, friction
The small core that hits Earth's surface is called a
asteroid
debris
meteorite
meteoroid
Meteorites are
Meteors from Mars
Meteors that strike Earth's surface
Asteroids captured by earth's orbit
shooting stars
Comets may be visible with the naked eye
During their entire journey around the Sun
When they are farthest from the Sun but only for a short period of time
They can never be seen from Earth with the naked eye
For a short time when they are near the Sun
Comets have very _________________________
circular orbits around the Sun.
elliptical orbits around the Sun.
circular orbits around an outer planet with gravitional pull
elliptical orbits around an outer planet with gravitional pull
The tail of a comet always points
away from the Sun.
towards the Sun.
DART is the first-ever mission dedicated to investigating and demonstrating one method of asteroid deflection by changing an asteroid’s motion in space through kinetic impact.
True
False
Meteors glow as they fall because when they hit the earth's atmosphere. the friction causes them to cool down.
True
False
Small rocks that get through to Earth's surface are called meteoroids.
True
False
Small rocks from space that burn up when entering Earth's atmosphere are called meteors.
True
False
Nasa successfully changed the orbit of Dimorphos a large planet that was threatening the Earth.
True
False
Short period comets come from a region called the ________________
Kuiper belt
Orion belt
Asteriod belt
Oort Cloud
Long period comets come from a region called the ________________
Kuiper belt
Orion belt
Asteriod belt
Oort Cloud
The inner edge of the Kuiper begins at the orbit of ___________
Jupiter
Saturn
Uranus
Neptune
Pluto
Without its tail, a comet looks like a ball of ice.
True
False
A thin, temporary atmosphere around a comet is called a(n) _____.
Nebula
Coma
comet gas
Asterick
comma
Comets are made of ice, dust, and small rocky particles
True
False
The Oort Cloud is closer to the Sun than the Kuiper Belt.
True
False
The Kuiper belt is home to
Short-period comets
Long-period comets
Asteroids
Dwarf Planets
An asteroid is
a rounded body that has craters in it
a small rocky body that orbits the Sun
A rock and ice body that orbits the sun
None of the above
The region where asteroids orbit between Mars and Jupiter is called
the Kuiper belt
the Oozort Cloud
the Near-Earth asteroid zone
The cometary zone
the Asteriod belt
In the early solar system, comets that struck Earth may have brought in
Plankton
advanced life
water
all of the above
Asteroid impacts are linked to mass extinctions throughout Earth's history.
True
False
Asteroids are circular-shaped because they have enough gravity to become round.
True
False
The asteroid belt divides the inner and outer planets.
True
False
The main asteroid belt can be found between the orbits of:
Earth and Jupiter
Mars and Jupiter
Venus and Mars
Venus and Jupiter
Asteroids are too small to have any significant impact on other objects in our solar system.
True
False
Comets remain frozen in the _____ solar system
inner
outer
entire
extra
Halley's Comet is a
short-period comet
long-period comet
Comets are only found in the outer regions of space and never enter Earth's atmosphere.
True
False
The next appearance of Halley's comet will be in the year
2082
2061
2053
2035
Objects in space that range in size from dust grains to small asteroids are called
Meteors
Meteoroids
Meteorites
all of the above
When these objects which are like "space rocks" enter the earth's atmosphere they burn up they are called
Meteors
Meteoroids
Meteorites
all of the above
If these space particles survive a trip through the atmosphere and hit the ground they are called
Meteors
Meteoroids
Meteorites
all of the above
As the Earth passes through the trail of dusty debris left by a comet there is a
solar eclipse
lunar eclipse
period of high tides
meteor shower
By studying meteorites we can learn about early conditions and processes in the solar system’s history.
True
False
A Meteor shower can best be observed when there is
a full moon
a dense cloud cover
no bright moon
a and b
Meteors are actually falling stars
True
False
When meteors appear in a close time frame in the same part of the sky, they are collectively referred to as meteoric dust.
True
False
Meteors do not enter Earth’s atmosphere.
True
False
If an asteroid hits Mars, bits can enter Earth’s atmosphere as meteors.
True
False
A meteoroid is dragged toward Earth by ______; it burns up due to __________ with the atmosphere.
Centrifugal force; friction
Gravity, vaporization
Friction, vaporization
Gravity, friction
Meteors enter the Earth's atmosphere, becoming very cold because of their reaction with Earth's atmosphere.
True
False
Small rocks from space that do not burn up entirely on entering the Earth's atmosphere and land on the Earth's surface are called meteors.
True
False
Meteorites are helpful to scientists because _____.
they are rare and can be sold for lots of money.
They aren't helpful to scientists.
they are the only reason to use a telescope.
many were formed in the early solar system and can give information about that time.
An asteroid could cause humans to go extinct.
True
False
Asteroids that orbit relatively close to Earth are called far-Earth asteroids.
True
False
Ceres is located in the Asteroid belt and is classified as a dwarf planet.
True
False
If an asteroid the size of Ceres hit Earth what would happen?
About one-half of Earth would have major destruction
It would have an impact similar to an atomic bomb like Hiroshima.
Dust clouds and debris would cover the atmosphere blocking out most sunlight for a period of time
Earth would be destroyed
The best way to stop an asteroid from hitting the earth is to
use nuclear power to blow it up into pieces
deflect the orbit and speed by using a kinectic impactor spacecraft
scientist have not discovered any way to stop or control any asteroids yet