| A | B | C | D | |
|---|---|---|---|---|
1 | Side1 | Side2 | CardColor | TextColor |
2 | Audio: English (US) | Audio: English (US) | ||
3 | What parts of an atom carry charge? | Protons are positive and electrons are negative. | purple | |
4 | What is charging by friction? | Rub two different materials together and one will steal electrons from the other. | green | |
5 | What charges result from charging by friction? | One is positive and the other is negative. The magnitudes are equal. | purple | |
6 | What is charging by conduction? | A charged object touches another object. | green | |
7 | A 2.5 C charge is touched to an equal sized -3.5 C charge. What is the resulting charge on each object? | Averaging the charges gives -0.5 C. | purple | |
8 | A neutral object is grounded and a positive charge is brought near. What charge does the neutral object gain? | The neutral object gains electrons from the ground. | green | |
9 | Do two similar charged objects attract or repel? | Repel. | purple | |
10 | Do two opposite charged objects attract or repel? | Attract. | green | |
11 | Do two positively charged objects attract, repel or no force? | Repel. | purple | |
12 | Do two negatively charged objects attract, repel or no force? | Repel. | green | |
13 | Do a neutral and positively charged object attract, repel or no force? | Attract. | purple | |
14 | Do a negatively charged object and neutral attract, repel or no force? | Attract. | green | |
15 | What charges result from charging by conduction? | Both object have the same charge. | purple | |
16 | What is induced charge separation? | The neutral object has a positive and negative side due to outside object. | green | |
17 | Who performed experiments on charged objects? | Coulomb. | purple | |
18 | What did Coulomb use to measure the force on charged objects? | Torsion balance. | green | |
19 | If the distance between charged objects is tripled what happens to the force? | The force becomes one nineth. | purple | |
20 | What is the law of conservation of charge? | Charge cannot be created or destroyed, just moved around. | green | |
21 | How do you charge by conduction? | A charged object touches a neutral object. | purple | |
22 | How do the charges after conduction relate? | Both objects have the same positive or negative charge. | green | |
23 | What is induced charge separation? | A charged object comes near a neutral object causing a positive and negative side. | purple | |
24 | What is a ground? | A source or accepter of infinite electrons. | green | |
25 | What is a conductor? | An object that allows electrons to flow easily. | purple | |
26 | What elements are good conductors? | Metals | green | |
27 | What is an insulator? | An object that does not allow electrons to flow easily. | purple | |
28 | What elements are insulators? | Non-metals | green | |
29 | What elements are semi-conductors? | Metaloids | purple | |
30 | What is the direction of an electric field? | Direction a small positive test charge moves. | green | |
31 | Can electric field lines cross? | No, electrons can't decide. | purple | |
32 | Electric field lines go from what to what? | From positive to negative. | green | |
33 | What did an experiment to measure electric force? | Coulomb | purple | |
34 | What did Coulomb use to measure electric force? | A torsion balance | green | |
35 | What equation did Coulomb derive? | http://mrstevemontgomery.weebly.com/uploads/8/3/8/6/83860664/p30-equation-force-electric-f-kqq-r2_orig.png | purple | |
36 | The electric force acting on particles depends on what two variables? | magnitude of charge and distance | green | |
37 | How does the electric force change if a charge is doubled? | The force doubles. | purple | |
38 | How does the electric force change if the distance between the charges is doubled? | The force decrease to a quarter. | green | |
39 | How does the electric force change if a charge is halved? | The force halves. | purple | |
40 | How does the electric force change if the distance between the charges is halved? | The force is four times larger. | green | |
41 | If the distance between two charges changes from 2 cm to 6 cm how does the force change? | The force changes to one ninth the original value. | purple | |
42 | If the distance between two charges changes from 10 cm to 5 cm, how does the force change? | The force becomes four times larger. | green | |
43 | How does the distance change to get four times the force? | The distance is halved. | purple | |
44 | How does the magnitude of the charge change to get four times the force? | Four times the charge. | green | |
45 | An electron is released in an eastward electric field. What direction does it accelerate? | Westward. | purple | |
46 | A proton is released in a northern electric field. What direction does it accelerate? | North. | green | |
47 | What is conservation of charge? | The total amount of charge doesn't change. | purple | |
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