Educational worksheet illustrating the lunar cycle with moon phases and definitions.

Let's solve this step by step.

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Part 1: Fill in the blanks with the correct moon phases

We are given a diagram showing the Moon’s orbit around Earth, with images of the Moon at different positions. The arrow indicates the direction of the Moon’s orbit (counterclockwise). We need to label each image with the correct phase using the word bank:

Word Bank:
- Waxing Gibbous
- First Quarter
- Waxing Crescent
- Full Moon
- Waning Crescent
- New Moon
- Waning Gibbous
- Third Quarter

Let’s analyze the positions around the orbit:

1. Position directly opposite the Sun (Earth between Sun and Moon):
→ The entire lit side is visible → Full Moon

2. Position where Moon is between Earth and Sun:
→ No visible light → New Moon

3. After New Moon, moving counterclockwise:
- Small sliver on the right → Waxing Crescent
(Light is increasing; right side lit)

4. Next: Half illuminated, right side lit → First Quarter

5. More than half lit, right side → Waxing Gibbous

6. Opposite side from New Moon → Full Moon (already labeled)

7. After Full Moon: more than half lit but left side lit → Waning Gibbous

8. Half lit, left side → Third Quarter

9. Then small sliver on the left → Waning Crescent

Now let’s match the images to their positions:

Looking at the diagram:

- Top-left: Full Moon → Full Moon
- Top-center: Right side lit, small crescent → Waxing Crescent
- Top-right: Thin crescent, right side → Waning Crescent? Wait – no!

Wait — we must be careful about direction.

Let’s trace the orbit counterclockwise, starting from New Moon.

The arrow shows the Moon moving counterclockwise.

So:

- Start at New Moon: Moon between Earth and Sun → not visible
- Then as it moves away from Sun, we see a Waxing Crescent (right side lit)
- Then First Quarter (half lit, right side)
- Then Waxing Gibbous (more than half lit, right side)
- Then Full Moon (entire face lit)
- Then Waning Gibbous (more than half lit, but now left side lit)
- Then Third Quarter (half lit, left side)
- Then Waning Crescent (small sliver, left side lit)
- Back to New Moon

Now label the diagram based on position:

Let’s go clockwise around the circle:

From top to bottom, left to right:

1. Top-left image → full moon → Full Moon
2. Top-center → small crescent, right side lit → Waxing Crescent
3. Top-right → small crescent, left side lit → Waning Crescent
4. Right-bottom → half lit, left side → Third Quarter
5. Bottom-center → half lit, right side → First Quarter
6. Left-bottom → more than half lit, right side → Waxing Gibbous
7. Left-top → more than half lit, left side → Waning Gibbous
8. Center-bottom → New Moon (not visible) → New Moon

Wait — actually, there are eight boxes around the diagram. Let’s list them in order around the orbit:

Starting from the top and going clockwise (but orbit is counterclockwise):

But the arrow shows motion counterclockwise, so let's go in that direction.

Let’s number the positions:

1. Top-left: Image shows full moon → Full Moon
2. Top-center: Small lit part on right → Waxing Crescent
3. Top-right: Small lit part on left → Waning Crescent
4. Right-bottom: Half lit, left side → Third Quarter
5. Bottom-center: Half lit, right side → First Quarter
6. Left-bottom: More than half lit, right side → Waxing Gibbous
7. Left-top: More than half lit, left side → Waning Gibbous
8. Center-bottom: Not visible → New Moon

Wait — center-bottom is not an image. The eight images are around the orbit.

Actually, looking at the diagram:

There are 8 boxes with moon images:

- Top-left: full moon → Full Moon
- Top-center: right side lit, thin → Waxing Crescent
- Top-right: left side lit, thin → Waning Crescent
- Right-bottom: left side lit, half → Third Quarter
- Bottom-center: right side lit, half → First Quarter
- Left-bottom: right side lit, more than half → Waxing Gibbous
- Left-top: left side lit, more than half → Waning Gibbous
- Center-bottom: no moon visible → New Moon

Yes.

So fill in:

- Top-left: Full Moon
- Top-center: Waxing Crescent
- Top-right: Waning Crescent
- Right-bottom: Third Quarter
- Bottom-center: First Quarter
- Left-bottom: Waxing Gibbous
- Left-top: Waning Gibbous
- Center-bottom: New Moon

Now place these labels above or below the images.

So final labels:

1. Top-left: Full Moon
2. Top-center: Waxing Crescent
3. Top-right: Waning Crescent
4. Right-bottom: Third Quarter
5. Bottom-center: First Quarter
6. Left-bottom: Waxing Gibbous
7. Left-top: Waning Gibbous
8. Center-bottom: New Moon

✔ Done.

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Part 2: Match the words with definitions

Now match the terms to the definitions.

List:

1. Moon phases
2. New moon
3. Crescent moon
4. Full moon
5. Gibbous moon
6. Waxing
7. Waning
8. Third quarter
9. First quarter

Definitions:

a. entire lighted side of the moon can be seen
b. light on right side is increasing or returning
c. half-moon where the light is on the right side
d. half-moon where the light is on the left side
e. the change in the amount of reflected light seen
f. the first phase of the lunar cycle; no visible shape
g. more than half of the lighted side of the moon is lit
h. less than lighted side of the moon can be seen
i. light on the left side is decreasing or leaving

Now match:

1. Moon phases → e. the change in the amount of reflected light seen
→ This is the definition of "phases" — how much of the moon we see changing.

2. New moon → f. the first phase of the lunar cycle; no visible shape
→ Correct.

3. Crescent moon → h. less than lighted side of the moon can be seen
→ Crescent means a small portion lit.

4. Full moon → a. entire lighted side of the moon can be seen
→ Yes.

5. Gibbous moon → g. more than half of the lighted side of the moon is lit
→ Gibbous = more than half.

6. Waxing → b. light on right side is increasing or returning
→ Waxing means growing. In the Northern Hemisphere, waxing moons have light on the right side increasing.

7. Waning → i. light on the left side is decreasing or leaving
→ Waning means shrinking. Light on the left side decreases.

8. Third quarter → d. half-moon where the light is on the left side
→ Third quarter: left side lit.

9. First quarter → c. half-moon where the light is on the right side
→ First quarter: right side lit.

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✔ Final Answers:

#### Part 1: Fill in the blanks (labels for moon images)

From the diagram:

- Top-left: Full Moon
- Top-center: Waxing Crescent
- Top-right: Waning Crescent
- Right-bottom: Third Quarter
- Bottom-center: First Quarter
- Left-bottom: Waxing Gibbous
- Left-top: Waning Gibbous
- Center-bottom: New Moon

#### Part 2: Matching

1. Moon phases → e
2. New moon → f
3. Crescent moon → h
4. Full moon → a
5. Gibbous moon → g
6. Waxing → b
7. Waning → i
8. Third quarter → d
9. First quarter → c

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✔ All done! Let me know if you'd like a visual explanation or summary.