Formation and evolution of Earth in the solar system

High school (ages 12+)
Space & Astronomy

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/formation-and-evolution-of-earth-in-the-solar-system

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the solar nebula composition?Primarily hydrogen and helium, with trace amounts of heavier elements
2. What is the core formation?Earth's core formed through the gravitational settling of dense materials during differentiation
3. What is the solar nebula hypothesis?The solar nebula hypothesis says that about 4.6 billion years ago, a giant cloud of gas and dust collapsed and spun into a disk, eventually forming the Sun and planets.
4. How did the Sun form from the collapsing cloud?As the cloud collapsed, it spun faster and flattened into a disk; the center got hot and dense enough that nuclear fusion started, creating the Sun.

Protoplanetary Disk: A rotating disk of dense gas and dust surrounding a newly formed star, from which planets eventually form.
Differentiation: The process by which a planet separates into layers based on density, such as core, mantle, and crust.
Refractory Materials: Substances that can withstand high temperatures without vaporizing, such as metals and silicate rocks.