Earth, Sun & Moon Patterns — Answer Key
Part A: Fill in the Blank
Write the missing word or number on each line.
1. One full spin of Earth equals one day.
Earth takes about 24 hours to spin around once, and that full spin is one day.
2. There are seven days in one week.
A week is a group of seven days, and they repeat in the same order every time.
3. The moon takes about one month to show all its phases.
The moon orbits Earth in about a month, showing full, half, crescent, and new.
4. Earth takes one year to travel around the sun.
Earth's long loop around the sun takes one year and gives us the four seasons.
5. We count days by watching the sun rise and set.
Each sunrise to the next sunrise is one day, so the sun helps us mark time.
6. We can see about one full moon each month.
A full moon happens about once each month when we see the entire bright side.
7. The pattern of four seasons helps us measure a year.
When all four seasons finish, one full year has passed and a new year begins.
8. Things that repeat in the sky are useful patterns.
Patterns repeat the same way, so we can use them to measure and predict time.
9. We can predict when the next full moon will come using patterns.
Because the moon cycle repeats each month, we can predict the next full moon.
Part B: Matching
Match each item on the left to the correct answer on the right.
1. Match each item to its correct answer.
One day
→ Sun rises and sets one time
Sun rises and sets one time
One week
→ Seven sunrises in a row pass
Seven sunrises in a row pass
One month
→ Moon shows all of its phases
Moon shows all of its phases
One year
→ All four seasons finish once
All four seasons finish once
Each time unit matches a repeating sky pattern that helps us measure how time passes.