Kevin’s Cards about Celestial Objects Flashcards
For centuries People assumed that the Sun and other Stars orbited-or moved around- what
Our plant Earth
The Sun orbiting around the Earth is what type of model
It is called the Geocentric model of the solar system
What does the Latin root Geo mean
Geo means Earth
What does Geocentric mean
Earth centered
What model puts the Sun in the middle of our Solar System
The heliocentric model
The Latin root helio means what
Sun
What does heliocentric mean
Sun centered
The invention of what scientific tool around the year 1600 gave scientists a much more accurate view of space from Earth
The telescope
Which scientist demonstrated the truth of the heliocentric model
Galileo Galilei
What is a star
An extremely hot, dense mass of gasses
As the glasses inside stars burn what does the stars give off
They give off visible light, as well as other charged particles
Most of the energy that reaches our planet includes what
Light and Heat that come from the sun
What sized star is the Sun
A medium sized star
What is the most massive object in the Solar System
The Sun
The Sun has enough of what that pulls the planets
Mass
The sun has enough mass that its gravitational pull and holds what
The planets and other objects in the solar system orbit the Sun
What does the Sun spin on
The axis
What is the meaning of the word axis
An imaginary line through the center of a sphere
The Inner Planets are also known as what
Rocky or Terrestrial planets
Outer planets are made up of what materials
Gasses and Liquids
What shape are the planets orbits
Elliptical or Oval shaped
A planet is what type of object
A celestial object
A planet must orbit around what
The Sun
A planet must have what shape
A nearly Spherical shape
A planet must clear the Neighborhood around what
Its orbit of Smaller objects
What is smaller the Moon or Planets
Moon
Moons are held in place by what
The planets Gravitational pull
Which planets don’t have moons
Venus and Mercury
Most asteroids are located where
In the Asteroid Belt
What is the definition of an Asteroid
Rocky objects that orbit the sun. However, asteroids are too small to be called planets or moons
Meteoroid Definition
is another rocky rocky object moving in space between the planets. Meteoroids are smaller than asteroids. Most meteoroids that enter Earth are like pebbles.
Meteorite definition
A piece of a meteoroid ( or an asteroid ) that survives its passage through the atmosphere and strike Earth’s surface.
Comet definition
Is a small mass of dust and ice that orbits the Sun
Coma definition
a cloud of dust or gas around the comet
Tail definition
A trail of dust and gas that stretches behind the comet
Meteor definition
The heat in the sky as a glowing ball is a meteor. Most burn up before hitting Earth.
Gravity definition
The force that governs the solar system
What makes the Earth revolve around the sun
Gravity
The smaller the mass the less of what
Gravity
The larger the mass the greater the what
Gravity
Gravity is a force of what
Attraction
Gravity happens between 2 or more objects with what
Mass
Who created the Law of Universal Gravitation
Sir Isaac Newton
What does the Law of Universal Gravitation say
As the distance between objects with mass increases the gravitational attraction between those objects decrease.
