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Planetary Science

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Tiana VonRueden

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3y ago
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Cards in this guide (12)
Why does the thermosphere have the highest temperature of all the atmosphere layers

The thermosphere is the first layer of the atmosphere where there are enough heavier molecules (oxygen) to absorb a significant anount of the Sun's radiation. Below the thermosphere, much of the heat is dissipated by convective currents.
Although technically "hot", the gas in the thermosphere is so thin that it can pass little heat to other molecules, and loss of heat by radiation would still cool objects in this part of the atmosphere.
the sun's radiation strikes it first

An explosion of a star

When a star explodes, it is referred to as a nova. If the star is large enough, it will create a super nova. And if the star is dense enough, it does not explode, but instead collapses on itself and forms a black hole

The Milky Way is one

The Milky Way is a galaxy.

The idea that everything in the universe came from a single dense ball 10 to 20 billion years ago has been named

The Big Bang Theory

Radiotelescopes reveal that space is full of

cosmic microwave background radiation.

What type of galaxy contains mostly young stars

Irregular Galaxy contains mostly young stars

What is the total kinetic energy of the atoms and molecules in an object called

Temperature is the measure of average kinetic energy of all the atoms and molecules in an object

A detected apparent change in the pitch caused by the motion of a sound source or of an observer is called

The Doppler effect.

The Doppler effect.

The Doppler effect.

The Doppler effect.

Remnants of a planet that never formed

That may be the asteroids.

Do terrestrial planets have more moons than the outer gas giants

Terrestrial means on Earth so Earth is the only terrestrial planet

This is incorrect, the first 4 planets are terrestrial as they are solidly bound planets. Pluto was also a terrestrial dwarf planet. Any planet can have moons but due to the gas giants having larger gravitational forces they have traditionally gathered more moons. Thusly, no.

What planet is physically most similar to the earth

As far as we know, Mars is the planet that is the most similar to the earth.

Match each event with its description

full moon

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