TalentJR apps
You need: a straight stick, a sunny open place, chalk or pebbles to mark the shadow, and a clock. What happens: in the morning the shadow is long and points west; at noon it is shortest; in the evening it is long again and points east. Why: light travels in straight lines and an opaque object blocks it, making a shadow on the far side. As the Earth spins, the Sun seems to move across the sky, so the shadow moves — that is how a sundial tells the time.
✓ You passed this lesson’s test.
Shadows point away from the Sun — “light travels in straight lines; an opaque object blocks it”
Use it for: Class 5–6 lessons on light, shadows and the Earth’s spin; an outdoor science project.
Check: In the morning the Sun is east, so the shadow points west ✓
▶ Watch it animatedWork it out in your head or on paper, type the answer and press Check. Stuck? Press “Show me how”.
Right: 0 · Tried: 0
20 questions. Check each answer, then go to the next one. Get 16 or more right to pass.
🏅 Sign in with Google to earn the 🌞 Sundial Keeper badge when you pass — and a certificate when you finish all 10 lessons of Part 3 · Physics and STEM projects. You can still take the test without signing in.
Why does it work? When should you use it? Ask in English, मराठी or हिंदी.
Sign in with Google to ask Free — 20 questions a day.
Prefer a real teacher? TalentJR teachers take live online classes anywhere in India and visit homes in selected cities. Tell us what you need and our team will call you with timings and fees.