Distance
Which planet is the closest to the sun?
Mercury
What is the center of our Solar System?
Sun
What planet has the shortest year?
Mercury
Which planest has the fastest orbiting speed around the Sun?
Mercury
In general, the terrestrial.planets have a (higher/lower) density than the Jovian planets.
higher
Which planet is farthest from the Sun?
Neptune
Which celestial object in the solar system has the most mass?
The sun
Name the 4 inner planets
Mercury, Venus,Earth, Mars
Which planet has the lowest speed orbiting the Sun?
Neptune
In general, Jovian planets have a (smaller/larger) mass than the terrestrial planets
smaller
1 AU is _____ km away from the Sun
150,000,000
The inner core of Jovian planets is _____ (solid, liquid, gas)
solid
Name the 4 outer planets
Jupiter, Saturn, Uranus, Neptune
The larger the radius of the orbit atound the Sun, the (lower/higher) the orbital speed of the planet
lower
What is the name for planets in the early phase of their development?
planetesimal
Earth is ___ AU away from the Sun
1
The outer core of Jovian planets are mostly made of ___ and ____
gas, solid
A _____ is made of dust and ice.
nebula
The (larger/smaller) the orbital radius the lower the period of revolution
smaller
Which planet has a longer day than a year?
Venus
The farther away from the Sun a planet is, the (greater/less) the radius of the orbit around the sun
greater
Why is the atmosphere thicker in the Jovian planets?
The surface gravity is greater and the average temperature is lower?
____ caused the nebula to collapse inward
Gravity
What are the all the planets in order?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune
The higher/lower the average temperature, the more easily a gas escapes from the planet.
higher