AlBashaer International School American Division Science Department Name ____________________________________Grade 6 Chapter 19 – section 2 – Green level Section: What is A Force? NAME: _________________________ DATE: _____________________ Read the words in the box. Read the sentences. Fill in each blank with the word that best completes the sentence. motion force newton 1. A pull is a _____________________-________. 2. Any change in _____________________________is caused by a force. 3. The SI unit for force is called a _____________________________. Circle the letter of the best answer for each question. 4. What does a person sitting on a chair exert on a chair? a. speed b. a force c. direction d. no force 5. What does a bulldozer exert on a pile of soil? a. motion b. no force c. force d. velocity 6. What is the force that holds air near Earth’s surface called? a. net force b. newton c. gravity d. acceleration 1 - Grade 6 push or a AlBashaer International School American Division Science Department Name ____________________________________Grade 6 7. What is the combination of all forces acting on an object called? a. energy b. net force c. motion d. heat 8. How do you find the net force when the two forces act in the same direction? a. dividing b. multiplying c. subtracting d. adding 9. How do you find the net force when the forces act in opposite directions? a. dividing b. multiplying c. subtracting d. adding 10. How would you find the net force of two dogs pulling in opposite directions? a. Subtract the smaller force from the larger force. b. Add the two forces. c. Subtract the larger force from the smaller force. d. Multiply the forces. 11. What is a combined force that does not cause movement? a. newton b. a net force 2 - Grade 6 AlBashaer International School American Division Science Department Name ____________________________________Grade 6 c. an unbalanced force d. a balanced force 12. When forces are balanced, the net force equals how many newtons? a. 0 c. 2 b. 1 d. 3 13. To make something move, what kind of force(s) do you need? a. a balanced force b. an unbalanced force c. any combination of forces d. no combination of forces 14. What kind of force causes something to change direction? a. a balanced force b. an unbalanced force c. any combination of forces d. no combination of forces 15. 3 - Grade 6 AlBashaer International School American Division Science Department Name ____________________________________Grade 6 17. A boy pulls a wagon with a force of 6 N east as another boy pushes it with a force of 4 N east. What is the net force? ____________________________________________________________________________________ __________________________________________________________________________ 4 - Grade 6 AlBashaer International School American Division Science Department Name ____________________________________Grade 6 18. Fill in the blank [Gravity – Friction –newton –force –spring scale] Term Definition It is a push or a pull applied to an object in a direction. It is the force that opposes motion It is the attraction force between two objects The measuring unit for force The measuring tool for force 18-For each of diagram, determine the net force acting on the object. Follow the format for showing your work shown in (a). Then, write whether or not there will be a change in motion. If yes, write the direction the object will move in. a. 2N 4N Net force: 4 N – 2 N = 2 N to the left. Change in motion: The box will move to the left. 5 - Grade 6