Theories of Universe
What are the tree types of galaxies. Describe each one.
Elliptical , Spiral, and Irregular.
When you view the sun and moon from earth are they the same size? Why or why not ?
When viewing the Sun and the moon from earth, the moon seems to be bigger . This is only because the moon is closer to Earth.
What force causes the meteor's speed to increase the closer it gets to Earth.
Gravity
What does meteor, comets ,and asteroids all have in common?
They all orbit the sun
What was the name of the person who coined the term Big Bang Theory
Fred Hoyle
The Big Bang refers to the creation of_________.
What is apart of the Universe ?
The universe
All matter , energy , and space
What is the main difference between Saturn and Earth?
Earth is a inner planet and Saturn is an outer planet
What two forces keep our solar system together
Gravity and Inertia
Where is the Asteroid belt located?
Between Mars and Jupiter
Jupiter is the ______ planet from the sun and the_____ in our solar system.
Fifth planet from the Sun and the largest in Earth's Solar System.
What is the name of the galaxy that we live in ? What type of galaxy do we live in?
Hint * It is the most common
The Milky Way and Spiral Galaxy
Why does Earth Support life?
Earth as oxygen in the atmosphere
What is mass?
The amount of matter in an object. How much space an object takes up
Where do meteors come from?
The Asteroid Belt
What type of showers are formed when the debris burns up in Earth's atmosphere?
Meteor showers.
How are Galaxies classified?
List the planet in order from closest to the sun
Mercury , Venus , Earth, Mars, Jupiter , Saturn , Uranus , Neptune
What is Weight ?
Weight is the amount of gravity on an given object
What are Meteors made of?
Rock and metal
What is the Red Spot on Jupiter?
A raging storm
What makes up a galaxy?
A massive collection of star systems orbiting a central point
What is a terrestrial planet?
A small dense planet that has a rocky surface
Due to inertia what direction does an object move in space ?
Forward in a straight line forever until an opposing force changes its direction
When a meteoroid hits the Earth surface what is it called?
A meteorite.
Halley’s comet orbits the Sun because_______
the force of gravity between the comet and the Sun influences the comet’s motion
What evidence is currently still happening that support the big bang theory?
The universe is still constantly expanding
Jupiter , Saturn , Uranus, and Neptune
What greatest gravitational pull? Moon , Earth, Star or Galaxy
A galaxy
What are Asteroids ?
Small rock bodies made of rock and metal. They are irregularly shaped.
Why does Earth NOT have similar craters like the moon?
Earth's atmosphere burns up most meteors.
What is the main difference between the heliocentric theory and geocentric theory.
The heliocentric theory has the Sun as the center of the solar system, and the geocentric theory has the Earth has the center of the solar system
List all of the inner planets
Mercury , Venus, Earth, and Mars
Due to Kepler's law how do the planets in our solar system orbit ?
Elliptical orbit
A meteoroid that burn up in the Earth's Atmosphere will cause people to see what?
People will think they see a shooting star
What in space is closely monitored by scientists in order to avoid a potential collision?
Asteroids
What was the 3 main evidence used to prove the big bang theory?
Red Shift Of Light
Cosmic Background Radiation
Abundance of light ( Composition of stars)
What planets have rings ?
Jupiter, Saturn , Uranus ,and Neptune
Why does the moon orbits around the Earth?
The existence of the force of gravity
What is a nickname for a comet ?
A dirty snowball
If you looked through a telescope and saw a spot followed by a stream of dust. What would it be ?
A comet
What mathematician first proposed a heliocentric model of the solar system?
Copernicus
Where is the Kuiper Belt located?
Outside the orbit of Neptune
What causes planets to orbit the Sun rather than the Sun to orbit the planets?
The Sun has a greater mass than the planets.
Where do most Comets come from ?
The Kuiper Belt and The Oort Cloud
Which shows a comet, meteorite, and meteor in order from smallest to largest?
Meteorite, Meteor, Comet
Where in the Milky Way is Earth's Sun?
The Orion Arm
In one of the rotating arms
What inner planets are equal in size ?
How does mass affect gravitational force ?
Gravitational force increase as an object mass increases.
What are the parts of a comet ?
The nucleus , coma, and tail
What is the difference between meteoroids, meteors, and meteorites?
Meteoroids float in space, meteors move through the atmosphere, and meteorites have landed on the surface.