Explorations 1/2
This would immediately follow if a planet is not moving relative to the sun (a stationary planet).
What would be the planet falls into the sun?
This scientist came up with the law of gravity.
Who is Sir Isaac Newton?
An oval shape defined by points for which the sum of the distances to two fixed points (foci).
What is ELLIPSE?
An action exerted on a body that tends to change the body's state of rest or motion.
What is FORCE?
True or False: The sun is always at the center point of an ellipse.
What is FALSE?
The relationship between mass and gravity.
What is LINEAR (any change in mass is reflected proportionally in the pull of gravity)?
Example: Doubling the mass of one object in a system would double the pull of gravity on the objects in the systems.
One of the two foci (central defining points) of an ellipse.
What is FOCUS?
A force of attraction between objects that is due to their masses and distance.
What is GRAVITY?
The law that states that the orbit of a planet is an ellipse with the sun as a focus.
What is Kepler's first law?
The relationship between the distance separating objects and the gravitiaional pull they experience.
What is is the gravitational pull experienced by two objects decreases proportionally to the distance between them SQUARED?
Example: Doubling the distance separting two objects would actually result in them experiencing 1/4 the gravitational pull.
A center line to which parts of a structure or body may be referred.
What is AXIS?
This has both magnitude and direction.
What is FORCE?
The law that describes orbital velocity: a planet moves more rapidly when it is clser to the sun and less rapidly when it is farther from the sun.
What is Kepler's second law?
True or False: The orbit of a planet can change over time.
What is TRUE.
The degree of elongation of an elliptical orbit.
What is ECCENTRICITY.
Another term for orbital debris which can circle Earth at speeds up to 8 km/s.
What is SPACE JUNK?
Kepler's third law states this.
What is the square of the orbital period -- the time it takes a planet to complete one full orbit around the sun -- was proportional to the cube of the planet's average distance from the sun.
This "station" sometimes gets a "push" from other vehicles to raise its speed and orbit.
What is the International Space Station?
This shape has an eccentricity of zero.
What is a CIRCLE?
A collaborative space laboratory that orbits Earth and is home to a permanent crew of astronauts.
What is the ISS (International Space Station)?