Flashcards in Astronomy and Physics Deck (34):
The study of the universe
The spin of a body on its axis
The travel of one body around another
The path that a body follows around another
An imaginary line on which the earth spins
A natural or artificial body that revolves around a planet
The distance light travels in a year
The distance between the Earth and The Sun
A Large object made of gas the produces light & heat by nuclear fusion
An area in space where the force of gravity is so strong that even light cannot escape
A group of stars that forms a recognizable shape from our perspective on Earth
One rotation of Earth's axis
One revolution around the sun
How long does it take for the Moon to orbit the Earth
What term describes the phase in which less than half of the moon is visible.
What term describes the phase in which more than half of the moon is visible.
What celestial object can be referred to as a 'dirty snowball'
7.785 x 10^8
How long ago did the Big Bang happen
13.7 billion years
When did our solar system form
4.7 billion years ago
What will happen 5 billion years from now
sun will expand into red giant
what will happen to the Sun after it becomes a red giant
It will blow up into a planetary nebula and the remaining core will be a white dwarf
A small particle from an asteroid or comet orbiting the Sun.
A meteoroid that is observed as it burns up in the Earth’s atmosphere – a shooting star.
A meteoroid that survives its passage through the Earth’s atmosphere and impacts the Earth’s surface.
What is a free body diagram
A simplified representation of an object that shows the forces acting on it.
what does it mean when forces are unbalanced
an object is in motion
Newton's First Law
An object at rest remains at rest and an object in motion remain in motion unless acted upon by an unbalanced force.
Newton's second law
The acceleration of an object depends on the mass of the object and the amount of applied force.
Newon's Third law
Whenever an object exerts a force on a second object the second object exerts a equal and opposite force on the first object.
The law of conservation of energy
The law that states that energy cannot be created or destroyed but can be changed from one form to another.
the energy of an object that is due to the object's motion