Topics 4 and 5 Test Science 8

What causes the Earth's seasons?

• the imaginary line passing through the center of the planet

• spinning of a planet, moon or sun around its axis

• Earth's tilt on its axis along with it's revolution

• how close the Earth is to the sun

What type of eclipse occurs when the moon blocks the sun's light and cast a shadow on earth?

• solar
• lunar

What moon phase occurs during a solar eclipse?

• Full moon
• new moon
• 1st quarter
• waxing gibbous

A galaxy which is either spherical (ball like) or a flattened disk is a ___ galaxy.

• elliptical

• humanoid

• irregular

• spiral

A Group of stars, and or star systems, star clusters, dust and gas held together by gravity is known as:

• Universe

• Galaxy

• Solar System

• Planet

The Milky Way Galaxy is a 

• spiral
• lenticular
• elliptical 
• irregular

Which planet in our solar system is closest to the Sun?

• Earth
• Jupiter
• Mercury
• Saturn

Which definition accurately describes the Astronomical Unit (AU)?

• The average distance between the planets. 
• The average distance between Earth and Mars.
• The average distance between the Earth and the Sun. 
• The average size of the Earth compared to the Sun. 

How do the sizes of the inner planets compare to the sizes of the outer planets?

• The inner planets are larger.
• The outer planets are smaller.
• There is no size difference between the inner and outer planets.
• The inner planets are smaller.

Earth's nearest neighboring planets are _____.

• Venus and Mars
• Mars and Jupiter
• Mercury and Venus
• Mercury and Jupiter