Meteors & Asteroids SY 24-25

Prayer

Introduction

  • Overview of the lesson focusing on the different members of the solar system including their composition and location.

Objectives

  • Compare and contrast comets, meteors, and asteroids.

  • Recognize the importance of truth and critical thinking in observing beliefs and practices about celestial bodies.

Reflection Questions

  • Have you ever wished upon a star? What wish did you make?

  • What wish would you make today?

  • When was the last time you saw a shooting star?

Shooting Stars

  • Visual description and impression of shooting stars.

Other Members of the Solar System

  • Focus on meteors, asteroids, and comets.

Differences Between Asteroids, Comets, and Meteors

  1. What is a comet?

  2. What is a meteor?

  3. What is an asteroid?

Guide Questions

  • Explore the definitions and characteristics of comets, meteors, and asteroids.

Meteoroid Definition

  • A small chunk of rock or metal traveling in outer space.

  • Originates from asteroids or comets that orbit the sun.

  • Derived from the Greek word "meteoros" meaning “high in the air.”

Differentiating Meteoroids, Meteors, and Meteorites

  • Meteoroid: Space debris in outer space.

  • Meteor: A meteoroid that enters Earth’s atmosphere, burning up.

  • Meteorite: A meteoroid that survives its passage through the atmosphere and reaches Earth’s surface.

Types of Meteoroids

  • Stony: 75% - 90% made up of rocky silicates, including minerals.

  • Iron: Mixture of metallic nickel and iron.

  • Stony-Iron: Mixture of rocky silicates and metallic nickel/iron.

Meteor Showers

  • A significant increase in meteors visible in the night sky.

  • Usually originate from debris left by passing comets or asteroids.

Meteor Shower Peak Information

  • Quadrantids: January 3-4, 80 meteors/hour, constellation Bootes, moon illumination not specified.

  • Lyrids: April 22-23, 18 meteors/hour, constellation Lyra.

  • Eta Aquariids: May 5-6, 50 meteors/hour, constellation Aquarius.

  • Southern Delta Aquariids: July 30-31, 25 meteors/hour, constellation Aquarius.

  • Perseids: August 12-13, 100 meteors/hour, constellation Perseus.

  • Geminids: December 14-15, 150 meteors/hour, constellation Gemini.

  • Ursids: December 22-23, 10 meteors/hour, constellation Ursa Minor.

  • Meteor showers are typically named after the constellation they appear to originate from; some occur annually.

Geminid Meteor Shower Footage

  • Viewing footage related to the Geminid meteor shower.

Question of the Day (QOTD)

  • Reflective thought or prompt related to the lesson.

What is an Asteroid?

  • A small rocky object that orbits the Sun.

  • Derived from the Greek word "asteroeides" meaning "star-like."

  • Formed from the remnants of the solar system's formation.

Characteristics of Asteroids

  • Some asteroids can be hundreds of miles in diameter; many more are the size of pebbles.

  • Composition mainly consists of different types of rocks, with some containing clays or metals like nickel and iron.

Classification of Asteroids

According to Composition

  1. C-type (Chondrite): Made of clay and silicates.

  2. S-type (Stony): Composed of nickel, iron, and other silicates.

  3. M-type (Metallic): Consists of pure nickel and iron.

According to Location

  • Main Belt: Found in the asteroid belt between Mars and Jupiter.

  • Near-Earth Asteroids: Asteroids that pass near Earth.

  • Trojans: Asteroids located near Jupiter’s Lagrange points.

Asteroid Location Chart

  • Illustrates the position of main belt asteroids, near-Earth asteroids, and Trojan asteroids related to planetary orbits.

Monitoring Near Earth Asteroids

  • Importance of tracking near-Earth asteroids for potential impacts on Earth.

Reflective Question

  • If you were a scientist tracking a near-Earth asteroid, what moral values would guide your communication with the public?

Question of the Day (QOTD)

  • Another reflective thought or prompt for discussion.

This or That Activity

  • On size 4 paper, write whether the following statements describe a meteoroid, an asteroid, or both:

  1. They could be found in the Jupiter Lagrange regions.

  2. They are described as space debris.

  3. They burn up in Earth’s atmosphere.

  4. They could be made of either silicates or metals.

  5. They could be hundreds of miles in diameter.

Reminders

  • Graded Seatwork #3: Due on Dec. 3, 2024

  • Quiz #3: Scheduled for Dec. 6, 2024