Inner Planets
The 4 Terrestrial Planets
What is Mercury, Venus, Earth, & Mars?
The 4 Gas Giants.
A comet is made of _____________ and is often nicknamed a ___________.
What is ice & dust & dirty snowball?
Small rocky or metallic objects that float in space and come from pieces of asteroids and comets.
What is a meteoroid?
These irregular shaped space rocks are only slightly smaller than planets or moons.
What is an asteroid?
Venus is the hottest planet because...
What is the greenhouse gases in its atmosphere trap the sun's heat?
_______________ has the shortest day at 9 hrs and 56 min.
What is Jupiter?
Most comets come from the _____________ or ________________.
What is the Kuiper Belt or Oort Cloud?
Meteors are also known as __________ because they burn up in Earth's atmosphere.
The Asteroid belt is between the orbits of __________ and ____________.
What are Mars & Jupiter?
243 Earth Days
What is a day on Venus (the planet with the longest day)?
The ______________ on Jupiter is thought to be a massive storm.
What is the Great Red Spot?
The head of the comet is made of the _______ (icy nucleus) and the ________ (the cloud of gas and dust).
What is the core and coma?
A ____________ hits the surface of a planet or moon and leaves a crater behind.
What is a meteorite?
Asteroids come in many shapes & sizes from ______ to ________.
What is 1 m to 1000 km?
Phobos and Deimos
What are Mars' two moons?
The four outer planets do not have __________ surfaces.
What is a solid?
The tail is caused by ___________ from the sun.
What is heat and solar winds?
In a meteor shower Earth passes through the _____________ and can experience up to 60 meteors per hour.
What is a comet's tail?
This asteroid was once called a planet when it was first discovered, but now is the largest asteroid in our Solar System.
What is Ceres?
____________ and Venus are twins in terms of size.
What is Earth?
All four Gas Giants have _____________.
What are rings?
Halley's comet passes Earth every ___________ years and will be seen again sometime in 2061.
What is 76?
Meteor crater is in _________________.
What is Arizona?
This object was once the 9th planet and is now in a new category called "dwarf planet" due to its size and characteristics of its orbit.
What is Pluto?