8th Grade Physics in Review
Take this quiz and look at your score.
Reflect.
Take the quiz again as may times as you need to in order to feel good about your understanding of these concepts.
Remember that your attitude can determine altitude.
You CAN do it!!!
Forces1. A force is2. Force is a vector quantity
because it has3. The SI unit used to measure the
magnitude of a force is the4. The combination of all the forces
acting on an object is called the5. Equal forces acting on one object
in opposite directions are called
Forces Continued6. The tendency of an object to
resist motion is called7. Gravity is a force that8. The two elastic forces are9. Friction is a force that10. When a book is sitting on a
table, what is the force of the table pushing up on the book called?
Finishing Forces11. If the net force on a chair is 6N to the
right, what will occur?12. A centripetal force is13. What is the effect of lift?14. The rate at which velocity changes with
time is called15. The rate at which velocity changes with
time is called16. The acceleration of an object depends
both on the net force acting on the object and on
17. Acceleration equals
Astronomical Forces18. Astronomers theorize that the
universe began with a enormous explosion of matter (force) called
19. The sun was formed when20. The path of an object as it
revolves around another object is space is called a(an)
21. The force that holds the moon in orbit around the Earth is
Motion22. A standard reference point is a place
or object23. Name an object that would make a
good reference point.24. The position of an object can be
defined using a reference point and a set of
25. The speed of an object is the26. Velocity is speed27. Velocity is a vector quantity because
it has both
More on Motion28. What equation can be used to
determine the speed of a moving object?
29. What equation can be used to determine the average speed of a moving object?
30. What equation is used to solve a problem that involves finding distance, given the time and average speed?
A Final Word on Motion31. A change in a speed, direction,
or both is a change in a moving object’s
32. What is the SI unit of acceleration?
33. On a position-versus-time graph, where is time shown?
34. Slope is35. To determine the slope of a
line,
Density and Buoyancy36. The density of a substance is based
on the substance’s37. Which unit is used to express the
density of a substance?38. When a sample of liquid is divided in
half, its density39. What is density used to determine?40. How is the mass of a rectangular
solid measured?41. How is the mass of an irregular solid
measured?
Wrapping Up Density and Buoyancy42. A beach ball pops out of water
because the buoyant force is43. Why does a ship float, when a
solid block of steel of equal weight sinks?
44. Why does an air-filled balloon fall to the ground?
45. Whether an object will sink or float in a fluid can be predicted by knowing
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