my 9 year old asked why we have summer and winter. can you draw it so she gets it?
The simple answer is: because Earth is tilted like a wobbling top, and as we go around the Sun, that tilt means the sunlight hits us at different angles.
Here is a drawing she can picture. Imagine looking at Earth from the side while it travels around the Sun:
North Pole always points the SAME direction in space
(like a top leaning over):
| | |
| | |
v v v
,-------. ,-------. ,-------.
/ | \ / ^ \ / | \
| | | | | | | | |
\ | / \ | / \ | /
'-------' '-------' '-------'
SUMMER WINTER
(North) (North)
North leans North leans
TOWARD the Sun AWAY from the Sun
Sunlight hits Sunlight hits
straight on. at a steep angle.
The 3 things to point out on the drawing:
- The leaning is always the same way. The North Pole doesn’t wobble back and forth between seasons. It always points in the same direction in space (toward the North Star).
- When we’re on one side of the Sun, that lean points the top of Earth toward the Sun. The Sun’s light hits us almost straight down. Days are long, the light is strong, and it’s summer.
- Six months later, we’re on the other side of the Sun. The same lean now points the top of Earth away from the Sun. The light hits at a low angle, days are short, and it’s winter.
The best way to make it “click”: the Orange & Lamp trick
Grab an orange (or a ball) and a flashlight/lamp in a dark room.
- Poke a pencil through the orange so it’s tilted (not straight up and down). That’s Earth’s tilted axis.
- Walk in a circle around the lamp, but keep the pencil leaning the same direction the whole time (don’t spin it to face the lamp).
- When the top of the orange leans toward the lamp, the light is bright and warm on that half → summer.
- When the top leans away, the light is weak and slanted → winter.
One myth to squash right now
Many kids (and adults!) think winter happens because Earth is farther from the Sun. That’s not true. In fact, Earth is actually slightly closer to the Sun in January! Seasons are caused by tilt and angle, not distance.
Bonus fun fact for her: While it’s winter for us, it’s summer in Australia, because they’re on the other half of the planet leaning toward the Sun at the same time.
The catch: The Earth is closest to the sun in early January, in the northern winter: the seasons come from its tilt.
Run details
- Model
- stepfun/step-5-preview
- Route
- OpenRouter API, one user message
- Served by
- DeepInfra
- Effort
- medium, OpenRouter's default for this model
- Limits
- 60 min · 64,000 output tokens (the model's limit)
- Date
- 24 Oct 2026
- Time
- 37 s
- Words
- 431
- Tokens
- 33 in, 7,328 out (6,679 of them thinking)
- List price
- $0.020 at today's price ($1 in / $2.7 out per M)
- Paid
- $0.020
Exact prompt
my 9 year old asked why we have summer and winter. can you draw it so she gets it?