Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
25 Cards in this Set
- Front
- Back
Shape of planetary orbits
|
ELLIPSES
|
|
widest length of an ellipse
|
MAJOR AXIS
|
|
half of the major axis
|
SEMIMAJOR AXIS
|
|
one of the foci of orbits within the Solar System
|
SUN
|
|
the points about which an ellipse is drawn
|
FOCI (plural for FOCUS)
|
|
the flatness of an ellipse
|
ECCENTRICITY
|
|
the eccentricity of a circle
|
0
|
|
when does an orbiting body move faster?
|
PERIHELION; point closest to focus
|
|
point in orbit closest to Sun
|
PERIHELION
|
|
point in orbit furthest from Sun
|
APHELION
|
|
Kepler's first law of motion
|
ORBITS = ELLIPSES
|
|
Kepler's second law of motion
|
FASTEST POINT IN ORBIT IS AT PERIHELION
|
|
Kepler's third law of motion
|
PERIOD OF ORBIT INCREASES RAPIDLY WITH RADIUS OF ORBIT
|
|
Newton's first law of motion
|
INERTIA
|
|
Newton's second law of motion
|
F=m x a
|
|
Newton's third law of motion
|
EVERY ACTION HAS AN EQUAL AND OPPOSITE REACTION
|
|
resistance to change in motion
|
INERTIA
|
|
a constant acceleration directed toward the center of a body
|
GRAVITY
|
|
Newton's view of gravity
|
A FORCE OF ATTRACTION BETWEEN TWO BODIES, AFFECTED BY DISTANCE AND MASS
|
|
The speed required to leave the gravity of a planet
|
ESCAPE VELOCITY
|
|
If mass increases, the gravity of the mass...
|
INCREASES
|
|
If distance from a mass increases, the effect of gravity from the mass...
|
DECREASES
|
|
planets with the least eccentric orbits
|
VENUS, NEPTUNE
|
|
direction of orbit for most moons and planets
|
COUNTERCLOCKWISE
|
|
planets with most eccentric orbits
|
MERCURY, PLUTO
|