The Solar System and Universal Gravitation
Uniform Gravitational Field
A constant field strength with parallel, equally spaced lines of force
Star
A huge ball of gases that makes its own heat and light
Radial Gravitational Field
A varying field strength around a spherical object that reduces with distance away from the center.
Gravitational Force
An attractive field force that acts between any two object, affected by the size of the masses and the distance between the masses.
Law of Universal Gravitation Equation
F = Gm₁m₂/r², where F is the gravitational force, m₁ and m₂ are the masses and r is the distance between their centers of mass.
Universal gravitational constant, G
G = 6.67 x10⁻¹¹ N kg⁻² m²
Who determined the value of Big G?
Henry Cavendish
Who developed the Law of Universal Gravitation?
Isaac Newton
Neptune
It has the fastest winds in the Solar System. It is dark blue.
Sun
It is a yellow dwarf star
Mars
It is called the Red planet.
Uranus
It's light blue.
It's the closest to the Sun.
Mercury
Our satellite
The Moon
its close to earth
The Sun appears to be the brightest and largest star because...
Our star
The Sun is made of hydrogen and helium gases, and supplies the heat and light that sustains life on Earth.
Orbit
The curved path of a celestial object or spacecraft around a star, planet, or moon; ; occurs when a projectile is moving fast enough so it falls at the same rate that the Earth's surface curves away beneath it.
93 million miles
The distance from the Earth to the Sun
Gravitational Field Strength, g
The force per unit mass placed at that point in the field
Jupiter
The largest planet and has at least 63 moons.
Earth
The only planet that supports life
Mercury
The smallest planet and fastest planet
General Relativity
This theory states that masses distort the four-dimensional space-time. The distortion creates the effect we describe as gravitational attraction.
Meteorite
When a meteoroid lands on the Earth's surface
Planet
a large body in space that orbits a star and does not produce light on its own
Gravity
a natural force that pulls two objects toward one another
Moon
a natural object that revolves around a planet
Orbit
a path of an object as it circles around another object in outer space
Meteor
a piece of rock or metal from space that enters Earth's atmosphere
Asteroid
a rocky object that orbits the Sun, found mostly in the region between Mars and Jupiter
Comet
a small object in space that orbits a star and is made of ice, dust particles, and frozen gases
The Moon
not a planet but it orbits our earth
Saturn
the 6th planet
Solar System
the Sun and the planets and other objects that orbit the Sun
Venus
the hottest planet
Revolve
the movement of an object around another object. The earth revolves around the sun.
Earth
the only planet in the solar system on which life is known to exist
Rotation
when an object spins on its axis
