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Study Guide Answers 

1. What is the mathematical science that studies interactions between energy and matter?  
physics  
2. What are two things that physicists investigate?  
the structure of matter and the motion of planets  
3. What university did Newton attend?  
Cambridge University  
4. Newton laid the foundation for what upper branch of mathematics?  
calculus  
5. How did Newton discover that sunlight is a mixture of all colors?  
by using a prism  
6. Which of Newton's inventions allows us to study the motions of planets and other celestial bodies?  
the reflecting telescope  
7. Fundamental scientific statements are scientific _________________________.  
laws  
8. What does the Law of Universal Gravitation state?  
that every object in the universe attracts every other object with a certain gravitational force  
9. ____________________________ is the measure of matter in an object.  
Mass  
10. ___________________________ is the measure of separation between two points.  
Distance  
11. What is the set number that's inserted into an equation to find the gravitational attraction between objects?  
the universal gravitational constant  
12. The earth's pull on objects is _______________________.  
weight  
13. What keeps the moon in orbit?  
earth's gravitational force  
14. Principia was published in what year?  
1687  
15. A push or a pull that causes a body to change its state of motion is _________________________.  
force  
16. What is stated in Newton's First Law of Motion?  
An object continues in its state of rest or of uniform motion unless compelled to change that state by an external force.  
17. An object at rest will ______________________________________________________________.  
stay at rest unless a force is applied  
18. An object will continue with a constant velocity unless ______________________________________.  
compelled to change by a force  
19. The First Law of Motion is also called "________________________________________________."  
The Law of Inertia  
20. What is "inertia"?  
the property that makes an object stay in motion if it is moving or remain motionless if it is not moving  
21. The force that opposes motion between two surfaces is _____________________________.  
friction  
22. If a force acts on an object, what will happen?  
the object will accelerate  
23. If the same force is applied to a light object and to a heavy object, which will show a greater change of motion?  
the lighter object  
24. For every force exerted on an object, there is a corresponding and _______________________ force.  
opposite  
25. Force is measured in ____________________________________.  
newtons  
26. When an object is pushed, it ________________________________________________________.  
moves in the direction in which it was pushed  
27. For each action, there is _____________________________________________________________.  
an equal and opposite reaction  
28. What is the study of objects, forces, motion, and properties of matter?  
mechanics  
29. Einstein concluded that the mass of an object can change with _______________________________.  
velocity  
30. For what theory is Einstein famous?  
The Theory of Relativity  
© Educational Video Network, Inc. 2005  www.evndirect.com Your leading source for curriculumbased educational videos and DVDs. 