Grade 6 Science And Technology – Light Energy Quiz
1. What is the main source if light energy
2. What is reflectiin?
3. Which of the following is not a property of light
4. Three of the following are materials that affect the movement of light, which one is not among them?
5. Which material /surface does not allow light to pass through it?
6. Which of the following is not an opaque material
7. Which type of reflection occurs on a rough shiny surface?
8. Which of the following is an example of light energy?
Light from a bulb is an example of light energy because it is a form of electromagnetic radiation that can be seen by the human eye.
9. What is the primary source of light energy on Earth?
The sun is the primary source of light energy on Earth as it emits light through a process called nuclear fusion.
10. Which object does not produce its own light energy?
The moon does not produce its own light energy, it reflects the light from the sun.
11. What color of light has the highest energy?
Blue light has the highest energy because it has a shorter wavelength and higher frequency compared to other colors.
12. Which material is transparent to most colors of light?
Glass is transparent to most colors of light, allowing light to pass through without significant absorption.
13. What happens when light energy is absorbed by an object?
When light energy is absorbed by an object, it gets converted to heat energy, increasing the object's temperature.
14. Which phenomenon allows us to see different colors in a rainbow?
The phenomenon of refraction of light through raindrops allows us to see different colors in a rainbow due to dispersion.
15. Which of the following colors of light has the longest wavelength?
Red light has the longest wavelength among the listed colors, which corresponds to lower energy.
16. Which color of light has the highest energy?
Blue light has the shortest wavelength and highest energy among the given options.
17. Which type of energy is produced when light is converted into electricity?
When light is converted into electricity through solar panels, it is harnessing solar energy.
18. What happens to light energy when it hits a mirror?
When light hits a mirror, it bounces off and gets reflected.
19. Which of the following materials is transparent to light?
Glass is transparent to light, allowing it to pass through easily.
20. What is the primary source of light energy on Earth?
The Sun is the primary source of light energy on Earth, providing heat and light.
21. Which of the following types of bulbs produce light energy by heating a filament wire?
Incandescent bulbs produce light energy through the heating of a filament wire until it glows.
22. What color does a prism split white light into?
A prism splits white light into the colors of the rainbow - red, orange, yellow, green, blue, indigo, and violet.
23. Which of the following objects absorbs light energy?
A black shirt absorbs more light energy compared to white paper or glass.
24. What is the unit of measurement for light intensity?
Lumen is the unit of measurement for light intensity, indicating the total quantity of visible light emitted by a source.
25. Which of the following objects would best reflect light energy?
A polished mirror has a smooth surface that reflects light energy effectively compared to rough or matte surfaces.
26. Which of the following is a form of light energy?
Visible light is a form of electromagnetic radiation that is visible to the human eye, therefore it is a form of light energy.
27. What is the main source of light energy on Earth?
The Sun is the primary source of light energy on Earth as it emits electromagnetic radiation in the form of sunlight.
28. Which of the following materials allows light energy to pass through easily?
Glass is transparent and allows light energy to pass through easily, making it a commonly used material for windows.
29. What happens when light energy is absorbed by an object?
When light energy is absorbed by an object, the energy is converted into heat, causing the object to become warmer.
30. Which color of light has the highest energy?
Blue light has the highest energy because it has a shorter wavelength and higher frequency compared to other colors of light.
31. What is the speed of light in a vacuum?
The speed of light in a vacuum is approximately 300,000 kilometers per second, which is the fastest speed possible in the universe.
32. Which of the following is not a form of light energy?
Sound waves are mechanical waves that require a medium to travel through, unlike light energy which can travel through a vacuum.
33. How does light energy travel?
Light energy travels in straight lines, known as rays, until it interacts with a surface or medium that causes it to change direction.
34. Which source of light energy is commonly used for seeing in the dark?
Flashlights are man-made devices that produce light energy using batteries and bulbs, making them a common source of light for seeing in the dark.
35. How does light energy affect plant growth?
Light energy is crucial for photosynthesis in plants, providing the energy needed to convert water and carbon dioxide into glucose that fuels plant growth.