Grade 9 science review
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| what is Electrical force? | total charge of an object depends on the difference in protons and electrons
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| What is an electrical force field? | All charged objects give off one.
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| What is conduction? | The movement of electrons
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| If an object is lower on the electrostatic scale that means what? | it gains electrons and becomes negative
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| If an object is higher on the electrostatic scale that means what? | it loses electrons and become positive
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| a neutral object is charged how? | By being rubbed with another neutral object
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| A conductor is? | Allows electrons to flow through easily
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| An insulator is? | Tightly bonds electrons. So there is no movement
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| Electrical current is? | The speed at which charge flows
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| electrical resistance is? | How much an object resists the flow of electrons
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| Thicker means? | Less resistance
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| Longer means? | More resistance
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| Warmer means? | More resistance
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| Induction charged separation is? | electrical fields push or pull electrons
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| induction is? | charging without contact
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| Strength of electrical force depends on: | 1. # of electrons
2. Space between the electrons
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| AC/ Alternating current is? | current flowing back and forth
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| DC/ Direct current is? | current flowing in 1 direction
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| PVI? | P=Watts
V=Volts
I=Amps
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| EPT? | E=Joules
P=Watts
T=Seconds
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| Electrical potential difference is? | The amount of energy needed to move a charged particle
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| KWH= | Watts divided by 1000 x Hours used
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| electricity cost= | Usage x Cost of electricity
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| Efficiency of electricity= | Energy out divided by energy in x 100%
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| A circuit is? | A loop of electrical current from one power source to another through loads
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| Parallel circuit? | Many loads in between
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| Series circuit? | Only 1 load
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| Parallel A= V= | A=# divided by how many power sources
V=Stays the same
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| Series A= V= | A=Stays the same
V=# divided by how many power sources
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| Primary Cell is? | Not re-chargeable
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| Secondary cell is? | Re-Chargeable
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
pinkcheer
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