Science: Unit 5 Test

Question 1

What is electric charge?

Answer 1

Electric Charges are the result of subatomic particles

Question 2

What kind of charges do protons produce?

Answer 2

Positive Charges

Question 3

What kind of charges do electrons produce?

Answer 3

Negative Charges

Question 4

What does electrical force depend on?

Answer 4

Strength of the charge of the particles
Distance between the particles

Question 5

What do electric Charges and forces also cause?

Answer 5

Electrical Fields

Question 6

What is an electric field?

Answer 6

The spaces around the particles where the particles exerts electric force on other charged particles

Question 7

What is greater affinity to electrons?

Answer 7

Hold electrons stronger and often gain electrons by friction

Question 8

What is less affinity for electrons?

Answer 8

Hold electrons weaker and often lose more electrons by friction

Question 9

Greater affinity becomes…

Answer 9

Negative

Question 10

Weaker affinity becomes…

Answer 10

Positive

Question 11

What is induction?

Answer 11

Charge without touch or connection to the object

Question 12

What is conduction?

Answer 12

Charge with touch or connection

Question 13

What is static electricity?

Answer 13

Buildup of electric charges on objects

Question 14

What causes static electricity?

Answer 14

Frictions causes electrons to be transferred from one object to another

Question 15

What is Static Discharge?

Answer 15

A sudden flow of electrons from one charged object to another

Question 16

What is the cause of lightning?

Answer 16

Charge separation: During a rainstorm, clouds develop distinct regions of positive and negative charges

Question 17

What is ground induction?

Answer 17

The cloud base repels electrons on the ground below , inducting a charge on the ground surface

Question 18

What is an electric current?

Answer 18

Flow of electrons from a place where there are more electrons to a place where there are fewer

Question 19

What is current measured in?

Answer 19

Amps

Question 20

Electrical Energy is calculated by multiplying power by the time the device is used. What is the formula for electrical energy?

Answer 20

EE=P*T

Question 21

What material allows electrons to not move easily?

Answer 21

Insulator

Question 22

A fan operates using a 240 volt and draws 3.5 amperes of current. Determine the power consumed by the motor.

Answer 22

840 ohms

Question 23

If the current through a circuit is 2 A and the resistance of a light bulb in the circuit is 10 ohms what is the voltage across the light bulb?

Answer 23

20 volts

Question 24

Which subatomic is responsible for the flow of electric current in a conductor?

Answer 24

Electron

Question 25

This circuit has a 24-volt battery and the resistor is 8 ohms BLANK amps are running through the circuit

Answer 25

3 amps

Question 26

Choose all of the examples where there would be an increase in the electric or magnetic force

Answer 26

Increase the amount of charge on the object Decrease the distance between the objects Increase the mass of the object

Question 27

A neutral atom loses an electron. What type of charge does it have now?

Answer 27

Positive

Question 28

What type of force occurs between like charges?

Answer 28

Repulsion

Question 29

After being rubbed on a sweater, a balloon has a higher number of electrons than protons on a surface. What type of charge does the balloon have?

Answer 29

A negative charge

Question 30

What is an electron?

Answer 30

A subatomic particles with a negative charge

Question 31

What is electric potential energy?

Answer 31

Energy stored due to the position of charged particles

Question 32

The repulsion or attraction between two charged bodies. Opposites attract, like repel.

Answer 32

Electric Force

Question 33

What happens to the resistance of a conductor if its tempature increases?

Answer 33

Resistance increases

Question 34

The relationship between voltage, current, and resistance is called BLANK law

Answer 34

Ohm's Law

Question 35

Static electricity is the buildup of electric charges on the surface objects, primarily caused by?

Answer 35

Friction

Question 36

Protons have a BLANK charge and electrons have a BLANK charge

Answer 36

Positive and Negative Charge

Question 37

What Is the formula for calculating electrical power?

Answer 37

P=I*V

Question 38

Ohm's Law is represented by the formula V=R*I. What does R stand for?

Answer 38

Resistance

Question 39

What is electric current defined as?

Answer 39

The flow of electrons from a region of high electron concentration to a region of low electron concentration

Question 40

If you increase the voltage across a resistor, what will happen to the current?

Answer 40

Current will increase

Question 41

What is the voltage of a circuit that has the resistance of 5 ohms and a current of 2 A

Answer 41

10 volts

Question 42

The static electricity that is able to be seen in the sky?

Answer 42

Lightning Bolt