The Sun's Life Cycle

What You'll Learn

The sun goes through an 11-year cycle of activity. During solar maximum, more sunspots and solar flares occur, which can affect satellites and power grids on Earth.

Key Words

light-year
constellation

Steps

Step 1 — Read

Study the diagram and label the parts you recognize.

Step 2 — Do

Build a scale model of the inner solar system using different-sized balls. Research the relative sizes and distances of the planets.

Step 3 — Observe

Observe what happens and describe it in detail.

Step 4 — Record

Record your observations in your science journal with measurements and descriptions.

Check Your Understanding

Question 1

1 of 3

What is a nebula?