1
True or False
Earth is a gas giant
False
How many asteroids are in the astriod belt? (estimate)
Millions
What shape are orbits?
Elliptical - Oval shaped
What holds celestial bodies together?
Gravity
Exosolar system
a system of celestial bodies outside our own solar system
True or False
The inner planets are colder than the outer planets?
False
Mereroid
Has a characteristic glow
Usually blows up when it enters the Earths atmosphere
Usually blows up when it enters the Earths atmosphere
Gas giant
Primarily made of hydrogen and helium
Varies greatly in size from one to the next
Primarily made of hydrogen and helium
James observes an orbiting body that is approximately 5.2 AU away from the Sun. He knows that it is primarily composed of helium and hydrogen. In which region of the solar system is the orbiting body located?
C. outer planets
planets composed mostly of elements heavier than hydrogen and helium; Uranus and Neptune are two such planets in our solar system
ice giant
Name the terrestrial Planets
Mars
Venus
earth
mercury
Comet
Has a characteristic glow
usually blows up if goes into the earths atmosphere
Has a characteristic glow
Asteriod
Primarily made of hydrogen and helium
Varies greatly in size from one to the next
Varies greatly in size from one to the next
True or false
The outer planets take longer to orbit the sun.
True
a larger outer planet composed of gases
gas giant
Name the gas giant planets
Saturn
Jupiter
Name the Ice Giant planets
Neptune
Uranus
Arrange the events in the order that they’re likely to occur leading up to the formation of a solar system.
The nebula spins
The nebula shrinks
The temperature increases
Nuclear fusion takes place
How would the absence of gravity affect the formation of planets?
B. The rocks and debris would never accrete into a planet.
a cloud of gas and dust in space
nebula
the collection of objects orbiting our Sun, including the eight planets and their moons, comets, asteroids, and meteoroids
solar system
What are two reasons why the terrestrial planets formed closer to the Sun after the supernova event that initiated the formation of the solar system?
1. They are made of denser objects, which can condense at relatively high temperatures.
2. They contain lightweight materials that condense in areas of relatively low radiation.
3. They are made of heavier elements, which have a stronger gravitational attraction to the Sun.
4. They are relatively small in size, so the Sun’s gravity has a strong influence on them.
5. They have gaseous surfaces, which is ideal in those areas of high radiation near the Sun.
1. They are made of denser objects, which can condense at relatively high temperatures.
3. They are made of heavier elements, which have a stronger gravitational attraction to the Sun.
According to one theory, Earth’s moon accreted to form its current structure following a giant impact between Earth and another celestial body.
During this event what held the debris close to Earth?
Gravity
Select all the correct answers.
Events involving a disk-shaped nebula occurred before the nuclear fusion that led to the birth of the solar system. Which two statements about the disk-shaped nebula are true?
1. Gravity caused the disk-shaped nebula to shrink.
2. Gravity caused the nebula to flatten out in its disk-like shape.
3. Rotational motion caused the disk-shaped nebula to shrink.
4. Rotational motion caused the nebula to flatten out in its disk-like shape.
5. The flattening of the disk caused the speed of rotation to decrease.
1. Gravity caused the disk-shaped nebula to shrink.
4. Rotational motion caused the nebula to flatten out in its disk-like shape.
an explosion that occurs when the core of a red giant collapses upon itself, the small atoms in the core are crushed together, and the temperature rises to more than 100 billion Kelvin to produce a shock wave
supernova