ACT Science2
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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| atmosphere | a gaseous envelope that encloses a celestial body
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| Big Bang | the theoretical origin of the universe that it was created when a sudden expansion from a single point infinite density
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| ecosystem | a community of organisms and their environment
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| gas | a fluid having neither shape nor volume and tending to expand indefinitly
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| heteroptrophs | an organism that requires organic compounds of carbon and nitrogen for it metabolic processes
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| mantle | the part of the Earth below the crust and outside of the core.
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| crust | the outer layer of a planet or moon
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| core | the central part of a planet, moon or star
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| neutrons | a particle without a charge that forms a part of all atoms.
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| protons | a positively charged particle that forms part of the nuclei of all atoms
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| electrons | a negatively charged particle
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| rotation | the movement of a celestial body around a central axis
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| universe | the entire body of matter or phenomena
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| equilibrium | a state of balance between opposing forces
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| half-life | the time in which half of the atoms of a radioactive substance disintrigates
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| molecule | the smallest unit of a substance composed of more than one atom.
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| nucleus | controls all the functions of the cell
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| regeneration | the replacement of a body part through growth of new tissue
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| turgor | the normal distention of cells caused by pressure
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| evolution | the development of a species over history including genetic modifications
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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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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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