Earth's Place in the Universe - Intro
Sun, Earth, Moon: motion, position, and what we observe
Learning Objectives
Identify the Sun-Earth-Moon system and correctly use rotate vs. revolve (orbit).
Connect relative position and motion in the Sun-Earth-Moon system to at least one observable pattern (day/night) and preview others (phases, seasons, tides, eclipses).
Engage
~1 minutesEngage (1 minute)
Teacher prompt (show of hands):• Why do we get day and night?
• What do you think the Moon is doing while we are having daytime?
Tell students: "Today we start Earth's place in the universe by focusing on the Sun, Earth, and Moon. We will use a quick model and connect motion + position to patterns we can observe."
Vocabulary + key ideas
~2 minutesRotate: spin in place around an axis. Revolve (orbit): travel around another object. Axis: an imaginary line an object spins around. System: a group of parts that interact.
Explain (2 minutes): what matters today
Earth rotates: this creates day and night.
The Moon revolves (orbits) around Earth.
Earth revolves (orbits) around the Sun.
Relative position + motion create patterns we can observe (today: day/night; later: phases, seasons, tides, eclipses).
Visual model (diagram)
~1 minutesActivity: mini-orrery demo
~3 minutesQuick check
~2 minutesWhat causes day and night on Earth?
Which statement is correct?
Exit ticket
~1 minutesIn 1-2 sentences: Explain how motion and position in the Sun-Earth-Moon system can create patterns we observe in the sky. Name at least one pattern.
Expected length: 15-50 words