Gravity & Obj. in Space
The force that holds objects together in space
What is gravity?
A star and all objects that orbit around it
What is a solar system?
Earth's spinning motion on its axis
What is rotation?
The lunar cycle lasts
29.5 days
When the moon lines up perfectly between the Earth and Sun, blocking sunlight
What is a solar eclipse?
The two factors the strength of gravitational force depends
What are mass and distance?
The region of space where most asteroids are found, located between Mars and Jupiter
What is the asteroid belt?
The movement of one object around another object
What is revolution?
How long it takes for the moon to complete one revolution and rotation
27.3 days
When the Earth lines up between the moon and the sun, blocking sunlight from reaching the moon
What is a lunar eclipse?
A spherical object that orbits a star in a region where there are many objects orbiting near it. It has not cleared its orbit.
What is a dwarf planet?
This planet is similar is size, mass, and gravity to Earth. Earth's twin.
What is Venus?
The angle of Earth’s tilt
23.5 degrees
The side of the moon that always faces the Earth
What is the near side?
Lunar eclipses can only occur during this moon phase
What is full moon?
Gravity pulls dust and gas inward in space, causing stars to form through this process
What is nuclear fusion?
This is a large storm in Jupiter's atmosphere
What is the Great Red Spot?
A solstice is a day where the Earth is tilted most ________ or ________ from the sun.
towards or away
Why the same side of the moon always faces the Earth
Its rotation and revolution periods are the same (tidally locked)
How many times a year eclipses occur
2-5 times per year
What's the difference between a meteoroid, meteor, and meteorite?
meteoroid - in space
meteor - in Earth's atmosphere
meteorite - on Earth's surface/landed on Earth
The planets in order from closest to furthest from the sun
Mercury
Venus
Earth
Mars
Jupiter
Saturn
Uranus
Neptune
An equinox is a day where Earth is ___ tilted towards or away from the sun.
not
When the moon is waxing, the light is on the _________. When it is waning, the light is on the _________.
Waxing - right
Waning - left
Eclipses do not occur every lunar cycle because
The Earth, Moon, and Sun need to line up perfectly