An 8th Grade 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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| Law of Superposition | as layers get deeper, they also get older
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| Catastrophism | the idea that quick and violent events change Earth
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| Uniformitarianism | the idea that things happening on Earth now also happened in the past
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| Radiometric Dating | figuring out the age of an object using its isotopes
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| Index Fossil | a fossil that can help figure out the age of its surroundings
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| Natural Selection | the idea that good traits will survive and change animals over time
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| Variation | a difference in a trait
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| Mutation | a random genetic change
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| Adaptation | a trait that helps an organism survive or reproduce
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| Vestigial Structure | a structure that is no longer needed, but is still there
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| Pathogen | a disease making organism: there are 4 types (Bacteria, Virus, Fungi, Protists)
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| Vector | anything that carries or gives a disease to another organism
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| Disease | a condition that is not normal, and affects an organism
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| Epidemic | when a disease spreads quickly and widely in small area
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| Pandemic | when a disease spreads quickly and widely in a large area/world wide
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| Nuclear Power | it makes a lot of power and is safe when you mine, but it creates toxic waste
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| Hydroelectric Power | renewable and creates no pollution, but it destroys the homes of some animals
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| Solar Power | renewable and is getting better, but it is expensive and the sun isn't always shining
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| Wind Power | renewable and can be used at night, but it only works when there is wind
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| Natural Gas | cleanest fossil fuel and and doesn't leave anything dangerous behind, but it is nonrenewable
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| Coal Power | we are already using it across the world and always provides power, but it is nonrenewable and harmful
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| Renewable | a resource that you won't run out of
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| Nonrenewable | a resource that you can run out of
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| Fossil Fuels | the remains of plants and animals that died millions of years ago
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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:
21pbrown
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