8th Grade Solar System Test

Earth’s atmosphere contains water vapor and carbon dioxide. These greenhouse gases are important because they?

• Are substances animals need to breathe

• Trap thermal energy in the atmosphere

• Protect against magnetic particles

• Create Earth's gravitational field

Which particles would you find in the nucleus of an atom?

• Protons and Neutrons

• Electrons and Neutrons

• Electrons only

• Electrons and Protons

What is the mass of an atom with seven protons, seven neutrons, and eight electrons?

• 7

• 8

• 14

• 22

The diagram shows a landform on Earth. How did the movement of Earth’s plates form the landform?

• Two oceanic plates slid past each other.

• Two continental plates collided.

• One continental plate slid past an oceanic plate.

• One continental plate subducted beneath an oceanic plate.

Which diagram shows a plate boundary that is typical for the formation of volcanoes?

• 
• 
• 
• 

The periodic table is organized in horizontal rows called...

• Groups

• Periods

• Families

• Chemical Symbols

The vertical columns of the periodic table are called...

• Periods

• Families

• Chemical Symbols

• Groups

What holds the planets in their orbits around the sun?

• gravity
• speed
• string
• air currents

An _______ is between the orbits of Mars and Jupiter. 

• Oort Cloud
• Asteroid belt
• Kuiper belt
• Photosphere

Venus, Mercury, Earth, and Mars are what type of planet?

• Gas Giants
• Ice Giants
• Terrestrial Planets
• Exterior Planets