Here's the completed passage with the correct words filled in from the word bank, along with a clear explanation for each choice:
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Completed Passage:
Only some objects can make their own light, including fires, lamps and
stars. They are examples of
sources of light.
Some
animals are also able to make their own light, such as fireflies.
Our star is called the Sun. Without the
light from the Sun reaching Earth,
plants could not grow and life would not exist.
There are many different stars and we can see some of them in the sky on a
dark and clear night.
Light from an
object which produces light can hit the surface of another object which does not produce light and bounce off it. This is called
reflection of light. It can cause light to change
direction.
At night, not all the shining lights in the sky are stars. Some of the brightest lights we see on a dark night are
planets, such as Mars, Venus and Mercury. They do not produce their own light, but we can still see them! In fact, we can see many different objects which do not
produce any light because light can be
reflected.
---
✔ Word Bank Used (in order of appearance):
- stars
- sources
- animals
- light
- plants
- dark
- object
- reflection
- direction
- planets
- produce
- reflected
*(Note: “colour”, “mirrors”, and “absorption” were not needed — as stated in instructions.)*
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## 🧠 Explanation of Key Concepts:
1.
Sources of Light: Objects like the Sun, stars, fires, and lamps *produce* their own light — they are called
light sources.
2.
Bioluminescence: Some
animals, like fireflies, glow by producing light chemically — this is called bioluminescence.
3.
Sun’s Role: The
light from the Sun is essential for photosynthesis in
plants, which forms the base of most food chains.
4.
Night Sky Visibility: Stars and
planets are visible on a
dark night when there’s no sunlight interfering.
5.
Reflection: When light from a source (like the Sun) hits a non-luminous
object (like the Moon or a planet), it
bounces off — this is
reflection. Reflection changes the
direction of light rays.
6.
Planets vs. Stars: Planets like Venus or Mars don’t
produce their own light — we see them because they
reflect sunlight toward Earth.
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This exercise helps students understand:
- The difference between luminous (light-producing) and non-luminous objects.
- How reflection allows us to see objects that don’t emit light.
- The vital role of sunlight for life on Earth.
- Why planets shine in the night sky even though they aren’t stars.
Let me know if you’d like a diagram or worksheet version! ✨
Parent Tip: Review the logic above to help your child master the concept of reflection of light worksheet.
