Flashcards in Chapter 7&8 Vocabulary Deck (15)
The idea that all the matter in the universe May contract and form a single ball of matter.
Matter that can't be seen but exerts a gravitational pull on stars and galaxies.
Velocity parallel to the earth's surface
There is gravitational attraction between only two masses in the universe. The strength of the force is inversely proportional to the distance squared.
Newton's Law of Universal Gravitation
The intensity of an effect to the inverse square of the distance from the cause.
Inverse Square Law
Higher than average high tides, lower than average low tides. Occurs when the sun, moon, and earth are in line. (Strongest during new and fool moon)
Lower than average high tides and higher than average low tides. (First and third quarter)
Any object that moves through the air or space under the influence of gravity.
An object in orbit around a body with a larger mass.
The earth drops a vertical distance of 5m for every 8000m tangent to its surface.
Curvature of the Earth
An oval path based on two fixed points called foci.
Both foci are at the same point. A special kind of ellipse.
The speed that a projectile must reach in order to escape the gravitational attraction of the Earth.
What is all the matter in the universe compressed into a small ball that exploded. This expanding material gave rise to the current stars and galaxies?
Big Bang Theory