BHS Earth Science Guide

Galaxies and the Universe

Earth Science

Quarter 1

McGraw Hill Module 24

RESOURCES

PACING: 5 DAYS

● Module Launch: 45 min ● Lesson 1: 90 min ● Lesson 2: 135 min ● Lesson 3: 135 min ● Module Wrap-Up: 45 min

Module24 ● Phenomena: Why did it take so long to discover other galaxies? ● Lesson 1: The Milky Way Galaxy? ● Lesson 2: Other Galaxies in the Universe ● Lesson 3: Cosmology ● Unit 4 STEM Project: Viable Habitat for Humans on Mars

LEARNING PROGRESSIONS

STANDARD

● The discovery of variable stars aided in determining the shape of the Milky Way. ● Global clusters of old stars are found in the nuclear bulge and halo of the Milky Way. ● The spiral arms of the Milky Way are made of younger stars and gaseous nebulae. astronomers discover that the universe is expanding. ● The Big Bang model came from observations of density and acceleration. ● The critical density of the universe, along with the amount of dark energy, will determine if the universe is open or closed. ● Hubble’s law helped

ESS.1.2 Construct an explanation of the Big Bang theory based on astronomical evidence of electromagnetic radiation, motion of distant galaxies, and composition of matter in the universe. Emphasize redshift of electromagnetic radiation, cosmic microwave background radiation, and the observed composition and distribution of matter in the universe. (PS4.B, ESS1.A)

● Cosmic background

radiation supports the Big Bang theory.

● The universe is made

mostly of dark matter and dark energy, whose natures are unknown. ● Conditions of outer space aren’t the same as conditions on Earth..

ESS 1.4 Design a solution to a space exploration challenge by breaking it down into smaller, more manageable problems that can be solved through the structure and function of a device.