Unit 1 Review.pdf

Name: ___________________________ Unit 1 Review 1. What are the three main categories of Science? 2. What are the six steps of the Scientific Method? 3. What are the three types of variables called? 4. Who reviews a hypo...

Name: ___________________________ Unit 1 Review 1. What are the three main categories of Science? 2. What are the six steps of the Scientific Method? 3. What are the three types of variables called? 4. Who reviews a hypothesis to prevent bias?  Name: ___________________________ 5. What is a model used for? 6. What is the difference between a scientific law and a scientific theory? 7. What is a standard? 8. What is SI abbreviated for?  Name: ___________________________ 9. What is volume? 10. What is matter? 11. What is mass? 12. What is density and how do you find it?  Name: ___________________________ 13. What is technology? 14. What are the four things technology can be? 15. How are society and science related?  Name: ___________________________ 16. What is motion? 17. What is an object’s displacement? 18. What are the rules for adding displacement? 19. What is speed?  Name: ___________________________ 20. What is rate? 21. What is velocity? 22. What is acceleration? 23. What is the difference between force and net force?  Name: ___________________________ 24. What is the difference between unbalanced and balanced forces? 25. What is friction? 26. What is gravity? 27. What are the four basic forces?  Name: ___________________________ 28. What is a field? 29. What is weight? 30. Are mass and weight the same thing? 31. What is Newton’s first law?  Name: ___________________________ 32. What is Newton’s first law sometimes called? 33. What is inertia? 34. What is Newton’s second law of motion?  Name: ___________________________ 35. What does Newton’s third law of motion state? 36. What is air resistance? 37. What is the terminal velocity? What does it depend on? 38. What is the only force acting on an object in free fall?  Name: ___________________________ 39. What are centripetal forces? 40. What is the law of conservation of momentum? 41. Practice Problem: A motorcycle is moving at a constant speed of 50km/h. How long does it take the motorcycle to travel a distance of 15km? Equation: a. Identity the unknown: i. b. List the knowns: i. ii. c. Set up the problem: i. D d. Solve the problem: i.  Name: ___________________________ 42. Practice Problem: what is the momentum of a car with a mass of 1400kg traveling north at a speed of 34 m/s? Equation: a. Identity the unknown: i. b. List the knowns: i. ii. c. Set up the problem: i. d. Solve the problem: i. 43. Practice Problem: A squirrel has a mass of 1.0kg. What is its weight? Equation: a. Identity the unknown: i. b. List the knowns: i. ii. c. Set up the problem: i.  Name: ___________________________ d. Solve the problem: i. 44. Practice Problem: If a helicopter’s mass is 4,500 and the net force on it is 18,000 N upward, what is its acceleration? Equation: a. Identity the unknown: i. b. List the knowns: i. ii. c. Set up the problem: i. d. Solve the problem: i.