The spin of an object around its axis is

Which movement of the Earth causes night and day?

Which movement of the Earth causes the changing of seasons?

A(n) ____________ occurs when Earth's rotation axis is titled neither toward nor away from the Sun.

A(n) _________ occurs when the Earth's rotation axis is tilted directly toward or away from the Sun.

How long does it take for the Earth to complete one REVOLUTION?

How long does it take for Earth to complete one ROTATION?

Which of the following occurs twice a year, marking the beginning of AUTUMN and SPRING?

Which of the following occurs twice a year marking the beginning of SUMMER and WINTER?

Which force keeps the planets orbiting the Sun?

The imaginary line from the North Pole to the South Pole around which Earth rotates is called its ____________.

When the Moon passes into the Earth's shadow, it is called a ____________.

When the moon passes between the Earth and Sun, blocking the sunlight, it is called a ________________.

Which moon phase is pictured?

When the lit portion of the moon appears to be getting smaller, it is said to be...

If you saw a full moon today, how long would you have to wait to see another full moon?

___________ are period rise and fall of the oceans' surfaces caused by the gravitational force between the Earth and the Moon and Sun.

The movement of one solar system object into the shadow of another object is a(n) ____________.

What is the theory that states the universe began from one point and has been expanding and cooling ever since?

What is a huge group of solar systems, stars, dust, and gas held together by gravity?

What does a light year measure?

A large sphere of gas which generates energy in its core and emits light, heat, and other radiation is a _____________.

Which word means the distance that light travels in one year?

The Milky Way is a....

What do we call space and all of the matter and energy in it - everything that exists?