Science
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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| This happens when positive and negative charges no longer balance. Give an example of it. | Static electricity.
Example- Lightning.
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| How is lightning formed? a) when the particles in a storm cloud are neutral b.) when positive particles form near the top of the clouds and negative particles form near the bottom of the clouds. c.) When positive particles form near the top and bottom. | B.when positive particles form near the top of the clouds and negative particles form near the bottom of the clouds.
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| Materials made up of atoms that become charged more easily than others. Electric passes fast. Give an example. | Conductors. Copper & Silver.
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| Materials are made of atoms that do not become charged easily. Electric charge moves slowly through them. Give example. | Insulators. plastic, wood, glass
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| Negative and Positive a) repel b) Attract | B. Attract
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| Negative and Negative; Positive and Positive A) repel B)attract | A. Repel
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| The invisible field around a magnet is the magnet's.. | Magnetic Field
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| This helps converts electric energy to magnetic energy to mechanical energy | Electromagnets
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| Electromagnets in doorbells | 2. Transformer- Controls current sent to electromagnet
3. Electromagnet- Electricity flows to wire and magnetizes the electromagnet
4. Contact Arm- pulls up
5. Bell
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| How do you make electromagnets stronger? | More coiled loops of wire, wrapping around a iron core, larger core makes it stronger.
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| The compass cannot be close to a ... | Magnet
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| If no magnet is near the compass which way does it point? | North
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| His discovery led to the first electric motor | Michael Faraday
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| Name the inventor who produced a current by changing a magnetic field. | Michael Faraday and Joseph Henry
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| What happens when a magnet breaks? | It become two magnets with a north and south pole.
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| In a _________, electrical current flows in one path only | Series circuit
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| In a _________, electrical current has two or more paths to follow. | Parallel circuit
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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.
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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:
JRojas
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