What your child will discover
Help the child understand that Earth’s axis is tilted. As Earth travels around the Sun each year, different regions receive different angles and lengths of sunlight, producing seasonal patterns.
Lesson 155 of 300
Why Do Seasons Change?
Understand that Earth’s tilted axis and yearly orbit change the angle and duration of sunlight received by different parts of the planet.
3–4 yearsWorld, Shapes & CommunityAdult guided
World, Shapes & Community · KnowledgeForKids.com
Listen together · adult controls the audio
The spoken lesson
"Earth travels around the Sun once each year. Earth also spins around an imaginary axis, and that axis is tilted. As Earth moves around the Sun, one hemisphere sometimes tilts more toward the Sun and receives more direct light and longer days. The other hemisphere receives less direct light and shorter days. Six months later, the pattern is reversed. This is why the Northern and Southern Hemispheres have opposite seasonal timing. Seasons are not mainly caused by Earth moving closer to the Sun. Different regions experience seasons in different ways. Earth's tilt and orbit change seasonal sunlight." DESIGN REQUIREMENTS: Use accurate tilt and sunlight geometry. Do not show the Sun orbiting Earth, dramatically changing Earth–Sun distance, or four-season stereotypes as universal.
Words to notice together
SEASONEARTHSUNTILTORBITHEMISPHERESUNLIGHTYEAR
Make it real
Pause, point, name what you notice, and connect the idea to something familiar in your child's day. Repetition, a calm voice, shared attention and dependable care matter more than finishing quickly.