Page 160 - Science Course 3 (Book 2)
P. 160
The Movement of the Sun, Earth, and Moon Mo12-L1a: What Causes
Seasons on Earth?
Lesson 1
equinox
when the earth’s rotation axis is tilted neither
toward nor away from the sun.
In this topic, you will learn the following
lessons: solstice
Mo.12–L1a: What Causes Seasons on Earth?
when the earth’s rotation axis is tilted directly
Mo.12–L1b: How Does the Moon Affect Earth? toward or away from the sun.
Mo12–L1a What Causes Seasons on Earth?
KEY CONCEPTS:
1. What causes seasons on Earth?
Vocabulary A-Z
Let us learn some vocabulary
revolution
the orbit of one object around another object.
Let’s Begin
Earth and the Universe
Earth is one of eight planets that orbit the Sun.
The Sun is one of billions of stars that make up the
Milky Way galaxy.
The Milky Way is one of billions of galaxies in the
rotation universe.
the spin of an object around its axis.
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