Chapter 9 Earth and Space

The earth spins on an imaginary line called its axis.  This is know as _________.

• Spinning
• revolution
• rotation
• disco danc

Earth also moves in an orbit around the sun.  One full orbit of one object around another object is called a ______________

• fidget spinner
• rotation
• revolution
• elliptical 

This visual shows that the seasons are caused by ........

• The tilt of the Earth while it is in orbit.
• The Earth being closer or further away from the sun.
• The Earth being warmer or colder.
• Santa Claus

An Earth revolution around the sun takes _______.

• one day
• 365 days (one year)
• one month
• one season

What are gigantic balls of very hot gases that give off radiation?

• comets
• suns
• moons
• stars

Our sun is ___________.

• a giant sized star
• a nebula
• a medium sized star
• a small star 

Though it is a medium-sized star, the sun is the largest thing in our solar system.

• true
• false

#1 on this visual shows the center of the sun.

• photosphere
• solar flare
• sol
• core

#3 on the visual shows the innermost layer of the sun called the _________.

• core
• photosphere
• corona
• chromosphere

The layers of the sun include the ______________________.

• photosphere
• chromosphere
• corona
• all of the above