Solar System #1
Planets that are smaller, rocky, may have a thin atmosphere, and high density.
What are terrestrial planets?
The force that holds together the solar system and Milky Way galaxy and controls orbital motions within them.
What is gravity?
The lit part of the moon is known as______.
What are phases?
One revolution of Earth around the sun takes _____
365 1/4 days
What are gas giants or Jovian planets?
What is 23 1/2 degrees?
A celestial object made of ice and dust
What is a comet?
A general term for a space rock particle.
What is a meteoroid?
What are craters?
Two methods used for space exploration.
What are telescopes, probes, spacecrafts, and human missions?
What is Summer Solstice?
A section of the sky that contains a recognizable star pattern.
What is a constellation?
Seasons are affected by the __________and the amount of solar energy the area receives.
What is the tilt of the Earth's axis?
3 requirements that define a planet
What is 1. Be in orbit around a star 2. have enough mass to be pulled into a stable sphere by gravity and 3. must dominate its orbit?
A group of galaxies under the same gravitational influence
When the moon's shadow falls on Earth we see a _______.
What is a Solar Eclipse?
When Earth's shadow falls on the moon, we see a _______.
What is a Lunar Eclipse?
A large system of stars held together by gravity
What is a galaxy?
Planet that has the shortest day.
What is Jupiter?
A rocky mass that orbits the sun.
What is an asteroid?
Galaxies that have very bright centers and very little gas or dust.
What are elliptical galaxies?
When neither the northern hemisphere nor the Southern Hemisphere is tilted towards or away from the sun.
What are equinoxes?
A pair of stars that revolve around each other and are held together by gravity.
What is a binary star system?
Name the planet with the largest temperature range.
What is Mercury?
What is waxing phases are when more of the moon's near side is lit each night (growing moon) and waning moon is when less of the Moon's near side is lit each night (darker moon)?