The leading theory for the formation of the moon
posits that the proto-Earth was struck by a Mars-sized object about 30 million years after the beginning of solar system formation
. Material from both the Earth and the impactor were ejected into orbit around the Earth.
What is the most current hypothesis for how the Moon was formed quizlet?
This is the current hypothesis Moon probably formed
when a large object collided with Earth 4.5 billion years ago
. Material in the rock ejected from± the collision eventually clumped together and became the Moon.
Which impact hypothesis best explains the origin of the moon quizlet?
What is the giant impact hypothesis for the origin of the Moon?
The Moon formed from material blasted out of Earth’s mantle and crust by the impact of a Mars-size object
. Why are terrestrial planets denser than jovian planets? Only dense materials could condense in the inner solar nebula.
What is our best hypothesis for why all the planets in our solar system orbit in the same direction as the Sun rotates quizlet?
According to our theory of solar system formation, why do all the planets orbit the Sun in the same direction and in nearly the same plane?
The laws of conservation of energy and conservation of angular momentum ensure that any rotating, collapsing cloud will end up as a spinning disk
.
What is the significance of this image quizlet?
What is the significance of this image? It
shows an actual disk of material orbiting another star
, providing strong evidence the planets really do form in such disks. This sequence of paintings shows how a large gas cloud can collapse to become a much smaller, spinning disk of gas.
What is the giant impact hypothesis for the origin of the Moon?
What is most widely accepted today is the giant-impact theory. It
proposes that the Moon formed during a collision between the Earth and another small planet, about the size of Mars
. The debris from this impact collected in an orbit around Earth to form the Moon.
What is the leading hypothesis for the origin of the Moon?
The prevailing theory supported by the scientific community,
the giant impact hypothesis
suggests that the moon formed when an object smashed into early Earth. Like the other planets, Earth formed from the leftover cloud of dust and gas orbiting the young sun.
What’s unusual about our moon?
What’s unusual about our Moon? It’s not the largest moon, but
it’s surprisingly large relative to the planet it orbits
. Fairly circular and in the same plane. Which have more moons on average?
What was the frost line of the solar system?
In astronomy or planetary science, the frost line, also known as the snow line or ice line, is
the particular distance in the solar nebula from the central protostar where it is cold enough for volatile compounds such as water, ammonia, methane, carbon dioxide, and carbon monoxide to condense into solid ice grains
.
What are the four major features of our solar system?
- smaller size and mass.
- higher density (rocks and metal)
- solid surface.
- few moons and rings.
- closer to the Sun.
What was the first line of the solar system?
The order of the planets in the solar system, starting
nearest the sun
and working outward is the following: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune and then the possible Planet Nine. If you insist on including Pluto, it would come after Neptune on the list.
Why did the solar nebula heat up as it collapsed group of answer choices?
Why did the solar nebula heat up as it collapsed? A)
Nuclear fusion occurring in the core of the protosun produced energy that heated the nebula
. … As the cloud shrank, its gravitational potential energy was converted to kinetic energy and then into thermal energy.
What are the orbits of the planets?
The orbits of the planets are
ellipses with the Sun at one focus
, though all except Mercury are very nearly circular. The orbits of the planets are all more or less in the same plane (called the ecliptic and defined by the plane of the Earth’s orbit).
What significance does the above painting have quizlet?
What significance does the above painting have? It
is thought to have initiated the avant-garde movement of Cubism
.
Who created the piece above quizlet?
Terms in this set (10)
The piece above is called, The Portuguese, by
Georges Braque
.
How does the greenhouse effect work quizlet?
How does the greenhouse effect work?
Visible light is emitted through the sun and passes through the infrared-blocking greenhouse gases
. The light then warms the surface of the earth and turns into infrared heat, which is then trapped in the atmosphere and reflected by greenhouse gases.
