3rd quarter science grade six reviewer.pptx

reviewer

1. What is the direction of the frictional force that acts on an object moving to the left? A) upward B) downward D ) to the left C) to the right

2. It i It is a non-contact force that keeps everything firmly on the ground. C) weight B) friction D) mass A) gravity

3. It refers to the amount of matter found it contain. A) gravity C) weight D) friction B) mass

4. Which of the following shows the presence of friction? A) cars continuously roll down hills C) things fall off on smooth surfaces D) people stay in place as they move B ) cars stop when the driver steps on the brakes

5. Who discovered the principle of gravity? A) Nicolas Copernicus B) Thomas Edison D) Albert Einstein C) Isaac Newton

6. Which is NOT a way of reducing friction ? C ) making the floor smooth B ) applying lubricant D ) putting grease on bicycle gears A) putting spikes on tires

7. Which is true about mass and gravity ? A) The lesser the object’s mass, the greater the pull of gravity. B) The greater the object’s mass, the lesser the pull of gravity. C ) The mass of an object and gravity are not related D ) The greater the object’s mass, the greater the pull of gravity

8. Which of the following statements describe friction? C) It does not oppose motion . B) It pulls objects downward. D) It moves along with the object. A) It slows down motion.

9. It is a contact force that resists an object from sliding against another surface. A) gravity C) weight D) mass B) friction

10. If the combined force acting on a stationary object is balanced, then the object will_____ A) Increase speed in the direction of the strongest force. B) Begin moving backward C) Decrease speed at a steady rate D) Remain at rest

11. Which of the following statements is NOT TRUE ? A) The harder a ball is kicked, the greater is the force exerted on the ball . B) A force can cause a ball to move. D) Greater force is needed to make an object move faster. A) Forces can be seen and can be felt.

12. The greater the distance between masses, the _______is the gravitational attraction. C) farther B) lesser D) more A) greater

13. To jump, you must overcome the force of _________. A) wind B) friction D) current C) gravity

14. The mass of an object does not change from place to place, but its ______does. A) speed B) shape C) width D) weight

15. An object that weighed 10kg on Earth was taken to Jupiter. What will happen to its weight? A) Will be the same C) Cannot be determined D) Will be greater B) will be lesser

16. When you throw a ball forward, gravity causes the path of the ball to _______. A) curve upward C) fall straight downward B) stay straight D) curve downward

17. How does gravity affect the movement of falling objects? D) It neither slows down nor increases the movement of falling objects. C) It does not affect the movement of falling objects. A) . It increases the movement of falling objects. B) . It slows down the movement of falling objects

18. Which of the following is NOT true about gravity? D) It is the force that keeps all planets on its orbits. C) It is an attractive force. B) I t pulls the two objects toward each other. A) It slows down the movement of falling objects.

19. How does gravity affect the motion of objects moving upward? A) It increases the motion of the objects . C) It neither slows down nor increases the motion of objects. B) It does not affect the motion of object s. D) It slows down the motion of objects.

20. Why do you need to put rollers under the cabinets when you want to move them? A) to apply more force C) to slow down the movement of the cabinet B) to stop the movement of the cabinet C) to minimize friction through the small surface of contact of the rollers.