Earth
The distant line where the land and the sky meet. What is it?
The horizon.
1.The Sun is our closest .
2.The planet with the shortest orbit around the Sun.
Star
Mercury
1.A temporary state of being. They part of the Moon you can see on a clear night.
2. The number of these the Moon has in a full cycle.
A phase
Eight
1.A star is a hot, glowing ball of this type of matter.
2.Stars that orbit each other.
Gases
Binary stars.A large body in space made of rock and metal.
An asteroid
What does the Earth rotate on?
What does the Earth revolve around?
Earth's axis.
The Sun.
1.The Sun, the planets, and all the other objects that orbit it.
The solar system.
1.In the process of appearing to grow larger, the Moon goes through the phases of half to full.
A waxing moon.
1.A very large group of stars.
2.One in a billion that exist in the universe.
A galaxy
The Milky Way
A small body in space composed of ice, rocks and dust.
A comet
1.It takes 23 hours, 56 minutes, and 4.1 seconds to complete one of these.
2.This runs from Earth’s north pole to its south pole.
One rotation or one day.
Earth’s axis
1.Eight of these revolve around the Sun.
2.Earth is the _____ planet from the sun.
Planets
Third
1.The full sequence of the Moon’s phases.
2.The Moon does not give off light. It is reflected from this.
A lunar cycle.
The Sun.
1.A tool used to make far away objects appear closer.
2.A transparent material use to affects the path of light rays coming into the eye.
A telescope
A lens
A small object in space that broke off of a comet or an asteroid and might crash to Earth
A meteor
1.Most planets, stars, beach balls, and marbles are this 3-dimensional shape.
1.The imaginary line that divides Earth into the northern and southern hemispheres.
Spheres
Equator
1.When the Moon shuts out the light of the Sun.
2. In the past, people believed that the Sun revolved around this
A solar eclipse
Earth
1.A period of time when the Moon moves into the Earth’s shadow.
2.This is Earth’s only natural satellite.
A lunar eclipse.
The Moon.
1.The name of our galaxy.
2.The shape of our galaxy.
The Milky Way
A spiral
Three objects, other than the planets and their moons, that orbit the Sun.
What are asteroids, comets, and meteors?
The star at the center of our solar system.
2. The greater the mass of an object, the greater its ________ force.
The sun
Gravitational
1.The number of days (or weeks) it takes for the Moon to orbit the Earth.
2.The Moon goes from full to half and appears to get smaller.
27.3 days or four weeks
A waning Moon.
1.A group of stars that forms an imaginary picture or shape.
2.People think the Orion looks like a hunter holding what?
Constellation
A bow and arrow.
Asteroids usually stay in this part of our solar system.
The Asteroid Belt