Q1 Science Grade 8 Final Summative Test.pptx

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1. SUMMATIVE TEST in Science 8

2. MULTIPLE CHOICE

3. 1. If you apply a force of 30 N to a 5 kg object, what will be its acceleration? 3 m/s² C. 6 m/s² 150 m/s² D . 35 m/s²

4. 2. According to Newton's second law, what is the unit of force in the International System of Units (SI)? Kilograms (kg) Newtons ( N) Meters per second ( m/s) Joules (J)

5. 3. If you push a table with 22 N, and the table has a mass of 11 kg, what is its acceleration? 1 m/s² C. 2 m/s² 3 m/s² D . 4 m/s²

6. 4 . If you push a box to the right with a force of 10 N, and your friend pushes it to the left with a force of 5 N, what is the net force on the box? 10 N to the right 5 N to the right 5 N to the left 1 5 N to the right

7. 5. In which of the following scenarios are balanced forces acting on an object? A soccer ball rolling down a hill A car accelerating on a straight road. A book resting on a table. A rocket launching into space.

8. 6 . If you sit on a chair, what forces are involved according to Newton's third law? A. The force of gravity pulling you down and the chair pushing you up. B. The chair exerting a force on you, and you exerting a force on the chair. C. The chair's force and the Earth's force. D. The force of inertia.

9. 7 . Which Law of Motion states that “In every action force, there is always an equal and opposite reaction force? Law of Interaction Law of Inertia Law of Acceleration Law of Motion

10. 8. When a child swings on a swing set, what type of energy is primarily changing as the child moves up and down? Kinetic energy Thermal energy Potential energy Nuclear energy

11. 9. In which state of matter does sound generally travel the fastest? Solid Liquid Gas All states are the same

12. 10. Which factor primarily affects the speed of sound in a gas like air? Temperature Pressure Humidity Density

13. 11. In the visible light spectrum, which color to have the longest wavelength and the lowest energy? Violet C. Green Orange D. Red

14. 12. When white light passes through a prism, it separates into colors. What is this phenomenon called? Dispersion C . Diffraction Reflection D . Absorption

15. 13. In which temperature scale is water's freezing point at 0 degrees and boiling point at 100 degrees? Kelvin C. Fahrenheit Celsius D . Rankine

16. 14. When a substance changes from a liquid to a gas, what is this phase change called? Melting Condensation Sublimation Evaporation

17. 15. What phase change occurs when a gas turns into a solid without passing through the liquid phase? Condensation C. Freezing Deposition D . Melting

18. TRUE OR FALSE

19. 16. The first Law of Motion is the Law of Inertia.

20. 17. In the Law of Acceleration, Mass is directly proportional to Acceleration.

21. 18. Isaac Newton is the proponent of the Theory of Impetus.

22. 19. Kinetic Energy is an energy at rest.

23. 20. Energy is the capacity to do work.

24. 21. In the visible light spectrum, color Red has the highest energy.

25. 22. Sound travels faster in cold temperature.

26. 23. The speed of sound at 0 ⁰C is 0.6 m/s

27. 24. Fahrenheit was proposed by William Thompson

28. 25. Melting is a Phase change turning Liquid into gas.

29. ESSAY

30. 26-30. If you punch a punching bag with a force of 30 N, based on the Law of Interaction, how much force will be applied back to you by the punching bag? Explain your answer in 2-3 sentences.