Class 4 Science Chapter 5 Test 1 Welcome to your Class 4 Science Chapter 5 Test 1 1. In windmill, electricity is produced from the energy of_______. Sun Water Coal fast wind 2. Due to _________ of light, we can see our image in mirror. Refraction Reflection Diffraction Diverging 3. The sun, stars and lighting are the _______sources of light. Artificial Natural Thermal Hydro 4. ________ is the form of energy that is produced by vibrations in an object. Prism Rainbow Sound Producer 5. _______is a form of energy that helps us to see things around us. Coal Mobile cell Light None of these 6. Electricity produced from the fast-flowing water is called as_______. Hydroelectricity Solar Mechanic None of these 7. Candle, oil lamp, torch, electric bulb are the ________sources of light. Artificial Natural Thermal Hydro 8. _______ travels in all directions in straight lines. Light Coal Mobile cell None of these 9. In thermal power station, _______ is/are used to produce electricity. Coal Oil Gas All of these 10. There are _________colors in sunlight. Five Six Seven One 11. _______ can be transformed into another form. Energy Water Both a & b None of these 12. How hydroelectricity is made? Dam is built and water of river is stored in a lake at certain height. The store water flows very fast through a tunnel and runs a turbine. The turbine runs a generator which produces electricity. All of these 13. There are _______ reserve of sources of energy like coal, oil and gas. Limited Unlimited Vide range None of these 14. Coal, oil and gas are made in _______ of years. 10 Hundreds Thousands millions 15. the colors present in sunlight are: Red, orange, yellow Green, blue Indigo, violet All of these Please fill in the comment box below. Time is Up! Time's up
