Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
12 Cards in this Set
- Front
- Back
|
A(n) __________ allows electrical charges to move freely. |
Conductor |
|
|
An object that is traveling around another body in space is in _________ around that body. |
Orbit |
|
|
The stored energy that an object has due to the position, condition or chemical composition is called ___________. |
Potential energy. |
|
|
Magnets exert forces on each other and are surrounded by a(n) _________. |
Magnetic field. |
|
|
The _________acting on an object is the combination of all the forces acting on the object. |
Net force |
|
|
Objects can be charged in may ways. a student is rubbing a balloon on his head. What method is she using to charge the balloon? |
Friction |
|
|
Which of the following is an electrical insulator? Copper, Rubber, Aluminum, Iron. |
Rubber |
|
|
The Law of universal gravitation says all bodies attract each other. If you drop a cup, it falls to earth. Why doesn’t the gravitational attraction between your hand and the cup keep the cup from falling? |
There is a gravitational attraction from the cup to your hand, but the Earth's gravity is stronger, so Earth's gravity pulls the cup. |
|
|
Which statement about the universality of gravity is untrue? |
Gravitational force between two objects depends only on the masses. |
|
|
Which of the following does not use an electromagnet? Electric motor, Galvanometer, Hand-held compass, Doorbell |
A Hand held compass. |
|
|
Which of the following is an example of the conversion of kinetic energy into gravitational potential energy? A person parachuting out of an airplane, A car racing around an oval track, A person skiing down a hill, A person walking up a hill |
A person walking up a hill. |
|
|
An atom loses an electron. What will happen when it approaches a positively charged ion? |
The ions will repel each other. |
