Humans & their Place in the Universe

The order of the inner planets outward from the Sun is_______________.

• Mercury, Venus, Earth, and Mars
• Mercury, Earth, Venus, and Mars
• Earth, Venus, Mars, and Mercury
• Mars, Venus, Earth, and Mercury

Where do stars form?

• in an empty section of space.
• in a supernova
• in a cloud of gas and dust called a nebula
• When existing stars spilt in half

A star begins as a _______, a large cloud of gas and dust.

• nebula
• dwarf
• giant
• black hole

A collection of stars, dust, and gas bound together by gravity is called a what?

• Nebulae

• Gravity

• Eclipse

• Galaxies

A large spiral galaxy that is home to Earth and the rest of our solar system.

• Atomic nuclei

• Gravity

• Milky Way

• Meteoroid

What is the force that every object exerts on all other objects because of their masses?

• Nuclear fusion

• Galaxies

• Gravity

• Pressure

What are the three types of galaxies? Mark all that apply.

• Spiral

• Irregular

• Force

• Elliptical

What is the name of the space station that is in low Earth orbit and has astronauts from around the world?

• The International Space Station (ISS)

• The Hubble Telescope

• Ganymede

• Titan

What is the name of the process by which two or more small nuclei fuse to make a bigger nucleus?

• Nuclear fusion

• Gravity

• Atomic nuclei

• Dwarf planets

A ___________________ is a small body moving in the solar system that would become a meteor if it entered the Earth's atmosphere.

• Meteor

• Meteoroid

• Milky Way

• Meteorite