The Big Ideas
At the end of this unit, you will be able to answer all of these questions:
- Why does the sun shine during the day, but is not there at night?
- Why does the sun appear to move across the sky from east to west?
- How are shadows on Earth affected by the Sun?
- How does the Sun’s changing position change shadows?
- Why does the moon appear to move across the sky?
- How does the moon get its light?
- What causes the moon to appear to change shapes each month?
- How is the moon a satellite?
- How does the Earth’s shadow affect the moon?
- How does a sundial work?
- What happens to the length of the day and night as the seasons change?
- Why are stars so different? Describe the physical attributes of stars—size, brightness, and patterns.