The Birth of the Earth

What is a Solar Nebula?

• A solar nebula is a planet

• A solar nebula is a solid object orbiting a star.

• A solar nebula is a cloud of gas and dust

• A solar nebula is a type of star

What gases mostly make up the Solar Nebula?

• Oxygen and nitrogen

• Carbon dioxide and methane

• Neon and argon

• Hydrogen and helium

What event caused the Solar Nebula to collapse?

• The collision of two galaxies.

• The formation of a black hole nearby.

• A comet passing through the solar system.

• A nearby supernova explosion.

What is a supernova?

• A supernova is a type of black hole.

• A supernova is a planet formation process.

• A supernova is a comet's tail during its orbit.

• A supernova is the explosion of a star.

What shape did the Solar Nebula take after collapsing?

• A spiral shape

• A spinning disk shape

• A flat sheet shape

• A spherical shape

What formed in the center of the disk?

• A galaxy

• A black hole

• A protostar

• A neutron star

What process created the Sun?

• Chemical reactions

• Nuclear fusion

• Gravitational collapse

• Solar wind

What happens to the core of the Earth as more material in the nebula joins it?

• The core gets bigger and loses pressure.

• The core becomes denser and gets hotter

• The core becomes lighter and cooler.

• The core doesn't change

What did the leftover dust and gas in the disk begin to form?

• Stars and galaxies

• Comets and asteroids

• Black holes and neutron stars

• Planets and celestial bodies

How did the particles in the disk get larger?

• The particles in the disk got larger through evaporation.

• The particles in the disk got larger from gravitational collapse.

• The particles in the disk got larger through accretion (banging into and sticking to eachother)

• The particles in the disk got larger due to radiation pressure.