The Sun
The chief source.
It emits light of its own, and it is where almost all the natural light on the Earth comes from.
📚 Chapter Learning Kit
Light: Shadows and Reflections · Class 7 Science · Curiosity
English 5 topics 175 leveled MCQs 85 flashcards 5 games Free
Shared by a Veda teacher · Generated with Veda AI · Oct 2026
⚡ Veda Bites
💡 Key Idea
✏️ Example
💡 Key Idea
💡 Key Idea
💡 Tip
💡 Key Idea
The whole idea, one bite at a time
Veda Bites are swipeable micro-lessons — each one teaches exactly one idea. Here's a taste from this kit; the app has the full deck.
Four more
Others that make their own.
Luminous or not
The two names.
Objects that emit their own light are luminous. Objects that do not are non-luminous.
Torch, object, screen
Set it up in the dark.
A torch placed so that a spot of light falls on a wall, or on a cardboard screen. Then hold things in the way.
Predict, then observe
The order is the point.
Write what you expect BEFORE you look. A prediction made afterwards is worthless.
Fully, partly, not at all
Three kinds of material.
📖 Smart notes
What you'll study, topic by topic
1
Where Light Comes From, and How It Travels
Some things make their own light and most do not. And three matchboxes with holes in them settle the oldest question about light: whether it bends.
- The Sun emits light of its own and is the chief natural source on the Earth.
- Stars, lightning, natural fire and certain animals emit light too.
- An object that makes light of its own is called luminous.
~40 min · full explanation, examples & memory tricks in the app
2
What Light Gets Through, and the Shadows Left
Hold things in a torch beam and they sort themselves into three kinds. Then take the set-up apart one piece at a time and a shadow turns out to need exactly three things.
- Light passes almost completely through transparent materials.
- Light passes partially through translucent materials.
- Light does not pass through opaque materials at all.
~40 min · full explanation, examples & memory tricks in the app
3
Reflection, and Where It Happens
A steel plate in sunlight does two things at once: casts a shadow and throws a bright spot the other way. A comb with one tooth-gap open shows exactly where the second one begins.
- A shiny opaque object casts a shadow and also throws a bright spot.
- A plane mirror is one that is flat and not curved.
- Sunlight falling on a shiny surface can be redirected onto a shaded wall.
~35 min · full explanation, examples & memory tricks in the app
4
The Image in a Plane Mirror
A pen in front of a mirror seems to have a twin behind it. Four careful checks tell you everything about that twin, and one of them is why AMBULANCE is painted back to front.
- A pen before a mirror seems to have a similar pen behind the mirror.
- That apparent pen is the image; the real pen is the object.
- The image formed by a plane mirror matches the object in size.
~40 min · full explanation, examples & memory tricks in the app
5
The Pinhole Camera, and Two Things to Build
A hole the size of a pin turns a candle flame upside down on a screen. Two mirrors let you see round a corner, and three of them give a pattern that never repeats.
- In a pinhole camera, light from an object passes through a tiny hole.
- It forms an image of the object on a screen behind that hole.
- The image of a candle flame on the screen is upside down, or inverted.
~45 min · full explanation, examples & memory tricks in the app
❓ Leveled MCQ practice
Try the smart MCQs from this kit
175 questions laddered from warm-up to topper-level, each with an explanation. A taste:
the chief natural light the Earth receives is
Beginner
A the Moon
B lightning
C the Sun
D a firefly
Show answer & explanation
the Sun
It emits its own light.
Four bright things are listed: lightning, a mirror, the Moon and a white wall. Which one is making the light you see?
Beginner
A Lightning
B A mirror, which can throw a bright spot of light onto a nearby wall
C The Moon
D A white wall
Show answer & explanation
Lightning
Stars, natural fire and certain animals do as well.
Consider these statements about light and the things we see. I. The Sun is the chief natural light the Earth receives. II. Moonlight is reflected sunlight. III. A mirror throwing a bright spot onto a wall is luminous. Which statements are correct?
Advanced
A I and II only
B II and III only
C I and III only
D I, II and III
Show answer & explanation
I and II only
I and II are correct. III is not: the mirror emits nothing of its own. It changes the direction of light that was already there, which makes it non-luminous.
The Moon is best described as
Beginner
A a luminous object
B a non-luminous object
C a source of natural light
D a kind of star
Show answer & explanation
a non-luminous object
It reflects the light of the Sun falling on it.
🃏 Flashcards
Tap a card to flip it
85 flashcards in this kit — the app reviews them with spaced repetition so the right card returns on the right day.
🎮 Learning games
Play your way through this kit
Every game is built from this kit's own content — scores feed your mastery, so playing counts as studying.
Categorization
Fact Or Myth
Sequence Builder
Memory Match
Speed Quiz
Playable in the app
Study it properly — free, in the app
The full Veda Bites deck, complete notes, spaced-repetition flashcards, leveled MCQs, tests and games for this kit — plus Daily Facts and the Arena, every day.