The Solar System

The Sun could hold over ______ Earth's.

• 5 million

• 2 million

• 10 million

• 1 million

What is the surface temperature of the Sun?

What feature of the Sun is pictured?

• sunspots

• solar flares

• prominences

• solar winds

Solar winds are a stream of _____ and electrons given off by the Sun's corona.

• neutrons

• gamma particles

• protons

• beta particles

How many atoms of hydrogen fuse to form helium?

• 4

• 2

• 5

• 8

Small rocky planets.

• Planetesimals

• Terrestrial

• Jovian

• Dwarf

What type of planet is Jupiter?

• Planetesimal

• Terrestrial

• Jovian

• Dwarf planet

A _____ is a cloud of dust and or gas in space.

• quasar

• galaxy

• black hole

• nebula

All the terrestrial planets have an _____ core.

• zinc

• copper

• gold

• iron

The Earth's atmosphere is 78% nitrogen and _____ oxygen.

• 21%

• 5%

• 50%

• 25%