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Science Review 7
| Question | Answer |
|---|---|
| Atoms are... | the smallest particle of an element. |
| The Nucleus in an atom consists of..... | protons and neutrons at the center of an atom |
| An electron shell is.... | a grouping of electrons surrounding the nucleus. |
| periods in the Periodic Table are... | each row in the periodic table going horizontal. |
| a group/family in the periodic table is... | each column in the periodic table, also showing the # of valence electrons. |
| Noble Gases are | un-reactive non-metals in group 18 or (8) of the periodic table with 8 valence electrons. |
| Valence Electrons are... | the number of electrons (-) on the outer shell. |
| Protons are.... | a positively (+) charged atom inside the nucleus. |
| Neutrons are... | a neutral charged atom (no charge) in the nucleus, contributes to mass. |
| Electrons are.... | a negatively charged (-) atom, NOT in the nucleus but in the outer shells. |
| most the volume in an atom is.... | empty space |
| Elements on the periodic tables are are arranged according to..... | an increasing number of protons. |
| the universe is... | a collection of galaxies |
| a galaxy is.... | a collection of solar systems,gas,dust,ash. |
| Red shifts are... | a drag of red; moving away |
| Blue shifts are.... | a drag of blue; moving towards. |
| Define Spiral Galaxy | a galaxy with arms coming off a central body |
| define elliptical galaxy | football shaped galaxy |
| Define Irregular Galaxy | no defined shape |
| Wavelength is...... | distance from crest to crest or trough to trough |
| frequency is.......... | how often wavelengths repeat in 1 second. |
| visible light is... | combination of RoyGBiv |
| galaxies are composed of... | dust,planets,stars,gases,meteors. |
| Infared light is..... | light outside the visible spectrum, heat sensing goggles pick up this wave. |
| an appropriate unit of measuring distance between planets.... | astronomical unit. |
| an appropriate unit of measuring the distance between stars or galaxies. | light years. |
| if a scientist adds a proton to an atom, that atom becomes a..... | new element |
| a neutron carries what charge.... | no charge |
| a motorcycle traveling at 35 mi/hr SLOWS as it approaches a stop sign, this is an example of... | acceleration |
| a bike racer travels 17 mi/hr in a southerly direction. this is an example of... | velocity. speed with direction.. |
Created by:
cdmralal
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