Galaxies and other Celestial Bodies
What type of galaxy do we live in?
The Milky Way Galaxy
How long does the Earth's rotation take?
24 hours or 1 day
What are some characteristics of a inner planet?
Solid surface, core of iron, closets to the sun, no rings, few moons, slow rotation, and fast revolution
The outer planets are composed of gas (hydrogen and helium). What is the density of the outer planets?
Lower density
Within our Solar System we have a star. What is the name of that Star?
Then Sun
What is the difference between a comet and an asteroid?
A comet is a frozen mass of gas and dust and has a tail. An asteroid comes in variety of sizes and made of rock and metal
How long does the revolution of the Earth take?
365 1/4 days, 12 months, or 1 year
What is a characteristics of a outer planet?
Rings, several moons, composed of gas (hydrogen and helium), fast rotation and slow revolution
The inner planets are composed of terrestrial or "rocky" surface. They also have a core of iron. What type of density do inner planets have?
Greater density
The sun is what type of star?
A dwarf star (medium sized)
This galaxy is shaped like an egg what is the name of the galaxy?
Rotation means to spin around. Earth rotates around the sun causes what?
Day and Night
What is a celestial object that divides the inner planets and outer planets?
Asteroids
The Earth is the third planet from the Sun. It has one moon that has a core of iron. Why is Earth's moon considered a moon and not a planet.
It revolves or orbits around the Earth instead of the Sun.
Phoenix is using a telescope to observe the stars in the night sky. She notices that some stars are more visible than others. Why is that?
The stars are closer to Earth than others. They are radiating more light energy than others.
Our solar system is located in the barred spiral arm of the Milky Way galaxy. What is the galaxy composed of?
Gas, dust, and stars
Revolution means to move around. Earth revolves around the Sun what does this cause?
Seasons
What type of revolution and rotation does a outer planet have?
A fast rotation (spinning) but a slow revolution (moving around)
What is the order of the planets in our solar system?
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune
Which star is located in the knee of Orion's belt?
Rigel
The length of the day is caused by what?
The tilt of Earth's axis
The constellations in the summer sky are different than the constellations we see in our winter sky. What causes the change?
Earths revolution
What type of rotation and revolution does a inner planet have?
A slow rotation and a fast revolution
Outer planets would have a large diameter (Gas giants) and Inner planets would have a small diameter.
The brightest star in the night sky?
Sirius (The Dog Star)