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Understanding scienc
| Term | Definition |
|---|---|
| Range | The range is the difference between the greatest number and the least number in the data set. |
| Median | The median is the middle number in a data set when the data are arranged in numerical order. |
| Mean | The mean, or average, of a data set is the sum of the numbers in a data set divided by |
| Mode | The mode of a data set is the number or item that appears most often. |
| Branches of science | Earth, life, and physical |
| Description | A spoken summary of observations. |
| Explanation | Is an interpretation |
| SI | I’d the international accepted system for measurement. |
| Triple beam balance | Measure the mass of an object |
| Thermometer | Go measure the temperature of a substance. |
| Axis | An imaginary line that passes though a planet’s center and its north and south poles, about which the planet rotates. |
| Rotation | The spinning motion of a planet on its axis. |
| Revolution | The movement of an object around another object. |
| Orbit | Path of an object as it revolves around an object in space. |
| Solstice | Either of the two days of the year on which the sun reaches it greatest distance north or south of the equator. |
| Equinox | Either two days of the year on which neither hemisphere is tilted towards or away from the sun. |
| Gravity | The attractive force between objects; the force that moves objects downhill. |
| Law of universal gravitation | The scientific law that states that every object in the universe attracts every other object. |
| Gravitation | Potential energy that depends on the height of an object. |
| Inertia | The tendency of an object to resist a change in motion. |
| Satellite | A body that orbits a planet |
| Sun | Largest object in our solar system |
| Star | A giant ball of superheated gas or plasma |
| Planets | Spherical orbit the sun |
| Meteor | A streak of light created by rock in space |
| Comet | Made of gas dust and ice that develops tail as it revolves around the sun |
| Constellation | A pattern or group of stars that people imagine represents a figure animal or object |
| Geocentric | Earth centered model |
| Heliocentric | Sun centered model |
| Ellipse | Oval shape of the planets’ orbits |
| Inertia | Force that keeps planets in motion |
| Phase | Different shapes of the moon you see |
| Solar eclipse | When the moon passes directly between the earth and sun |
| Lunar eclipse | Occurs during a full moon when earth is directly between the moon and sun |
| Umbra | Darkest part of a shadow where light is completely dark |
| Penumbra | Area of a shadow where light is partially blocked |
| Tide | Daily rise and fall of ocean water |
| Spring tide | Higher high tides during full and new moons |
| Neap tide | Lower high tides during the first and third quarter moons |
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