planets
This is the planet that is closest to the sun.
What is Mercury?
A stream of particles that extends outward from the sun’s corona is called
What is solar wind?
The flash of light produced when a meteoroid passes through Earth’s atmosphere is a(n)
What is a meteor?
The scientist who first used a telescope to make discoveries that supported the heliocentric model was
Who was Galileo?
This astronomer believed in a geocentric system.
Who is Ptolemy?
The four terrestrial planets all have
What are rocky surfaces?
In this zone of the sun, hot gases rise and move energy toward the sun’s surface.
What is the convective zone?
This is between the orbits of Mars and Jupiter.
What is the asteroid belt?
The reason the temperature on Mercury varies so widely.
What is it has little to no atmosphere?
This astronomer introduced the heliocentric model of the solar system.
Who is Copernicus?
The planet Venus is similar to Earth in its
What is size?
This model of the planets is sun-centered.
What is heliocentric?
This has a loose collection of ice, dust, and small rocky particles and typically has a long, narrow orbit.
What is a comet?
This inner planet has an orbit opposite of Earth's.
What is Venus?
This astronomer suggested an elliptical orbit of the planets.
Who is Kepler?
These are sometimes considered a double planet.
What are Pluto and Charon?
These are eruptions that occur when gas on the surface of the sun becomes extremely hot.
What are solar flares?
These are meteoroids that entered our atmosphere and hit Earth without completely burning up.
What are meteorites?
There is a large amount of iron giving this planet a reddish color.
What is Mars?
This astronomer suggested inertia and gravity kept planets in orbit.
Who is Isaac Newton?
These are the gas giants.
What are Jupiter, Saturn, Uranus, and Neptune?
The sun's energy comes from this in its core.
What is nuclear fusion?
Meteoroids usually come from
What are comets or asteroids?
Earth's atmosphere is 78%
What is nitrogen?
It takes this many minutes for sunlight to reach earth.
What is 8?