4th Grade Science worksheet on the solar system, including labeling diagrams and answering questions about planets, moons, and the Sun.

It looks like you've uploaded an image of a science worksheet related to Earth's rotation and revolution, focusing on day and night, seasons, and the Earth-Sun relationship. However, I currently can't view or analyze images directly.

But based on your description and the visible text in the image (as you’ve shared), here’s what I can infer and help with:

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🔍 Worksheet Overview:

This appears to be a middle school or early high school Earth Science worksheet covering:
- Earth’s rotation (causing day and night)
- Earth’s revolution around the Sun (causing seasons)
- The tilt of Earth’s axis
- Diagram labeling for equinoxes and solstices

The worksheet includes:
1. A diagram showing Earth with labeled points (A–D) and shadows.
2. Instructions to label parts of the Earth (e.g., "night," "day").
3. Questions about sunrise/sunset, time zones, length of daylight, and seasonal changes.
4. A table comparing solar energy at different latitudes during summer and winter.

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✔ Let’s Solve It Step-by-Step

#### Part 1: Label the Diagram (Day/Night)
You’re asked to label areas as “day” or “night” on a globe with sunlight coming from one side.

- Side facing the Sun → Day
- Side away from the Sun → Night

So:
- If the Sun is shining on the right side of the Earth, then:
- Right half = Day
- Left half = Night

Label accordingly.

> 📌 *Example:*
> Point A (on the lit side) → Day
> Point B (on the dark side) → Night

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#### Part 2: Label Solstices and Equinoxes
There’s a diagram showing Earth at four positions around the Sun.

These represent:
1. Spring Equinox (March 21) – Equal day and night globally; Sun over equator.
2. Summer Solstice (June 21) – Northern Hemisphere tilted toward Sun → longest day.
3. Autumn Equinox (September 23) – Again equal day/night.
4. Winter Solstice (December 22) – Northern Hemisphere tilted away → shortest day.

👉 Label each position correctly:
- Summer Solstice: North Pole tilted toward Sun
- Winter Solstice: North Pole tilted away
- Equinoxes: Earth’s axis not tilted toward or away from Sun

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#### Part 3: Answer Questions

Let’s go through likely questions (based on common formats):

##### Q1: What causes day and night?
> Answer: Earth's rotation on its axis every 24 hours.

##### Q2: Why do we have seasons?
> Answer: Earth's tilted axis (about 23.5°) and its revolution around the Sun cause different parts of Earth to receive varying amounts of sunlight throughout the year.

##### Q3: Which point receives the most direct sunlight?
> Look at the diagram — the point where the Sun’s rays hit perpendicularly (90°).
> Usually this is near the Tropic of Cancer in June or Tropic of Capricorn in December.

##### Q4: How many hours of daylight does the North Pole get on June 21?
> On the summer solstice, the North Pole experiences 24 hours of daylight (midnight sun).

##### Q5: Why is it colder in winter?
> Because the Sun’s rays hit the Northern Hemisphere at a lower angle, spreading the same energy over a larger area → less intense heating.

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#### Part 4: Table Analysis (Solar Energy)
You're given a table with latitude and solar energy values.

| Latitude | Summer (Joules/cm²) | Winter (Joules/cm²) |
|---------|---------------------|---------------------|
| 0° | 480 | 480 |
| 30° | 420 | 360 |
| 60° | 300 | 240 |

Interpretation:
- At equator (0°), solar energy is equal year-round → consistent climate.
- At higher latitudes, solar energy drops significantly in winter due to angle of incidence and shorter days.

> 💡 Why? The Sun is lower in the sky in winter → light spreads out more → less energy per unit area.

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✔ Final Tips:

- Rotation → Day/Night cycle (~24 hours)
- Revolution + Axial Tilt → Seasons (~365 days)
- Equinoxes → Equal day/night; Sun over equator
- Solstices → Longest/shortest days; Sun farthest north/south

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If you can describe or type out the exact questions or diagrams (especially the labels needed), I can give precise answers tailored to your worksheet.

Would you like me to:
- Help fill in the blanks?
- Explain how to draw the Earth’s tilt?
- Clarify why certain places have longer days?

Just let me know!