SunLargest object in the solar system.
MercuryThe closest planet to the Sun.
VenusThe 2nd planet from the Sun.
EarthThe 3rd planet from the Sun.
MarsThe 4th planet from the Sun.
JupiterThe 5th planet from the Sun. Largest planet.
SaturnThe 6th planet from the Sun.
UranusThe 7th planet from the Sun.
NeptuneThe 8th planet from the Sun.
Inner PlanetsPlanets closest to the sun. Small, dense and rocky. Few or no moons. You would be older and weigh less on these planets. Revolve fast.
Outer PlanetsPlanets furthest from the sun. Large, made of gas, rings, and moons. You would be younger and weigh more on these planets. Revolve slow.
MoonsThey orbit planets.
Terrestrial PlanetsEarth-like: Mercury, Venus, Earth, & Mars.
RevolvesTravel around another object. The Earth ______around the sun to create a year.
RotatesThe Earth ______once in 24 hours to create a day.
JovianJupiter-like: Jupiter, Saturn, Uranus, Neptune
Independent VariableWhat is changed by the experimenter. Does giving plants more water make them grow taller ? In this example, the amount of water is the independent variable.
Dependent VariableWhat is measured as a result of the experiment. Does giving plants more water make them grow taller ? In this example, how tall the plants grow is the dependent variable.
volumeThe amount of space an object takes up. It can be calculated by the formula: length x width x height. It also can be determined by using a graduated cylinder.
densityA ratio of mass to volume. The formula is mass divided by volume.
massThe amount of stuff in an object.
waterWater has a density of 1 g/ml. An object will float in water if its density is less than 1 g/ml. An object will sink in water if its density is more than 1 g/ml.
twenty three and one halfThe number of degrees Earth is tilted.
counterclockwiseDirection of all the planets' revolutions.
gravityThe force that makes the planets orbit the sun.
planetsRevolve around the Sun. MVEMJSUN
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
fociCenter points. You need 2 foci (center points) to draw an ellipse (oval). The sun is at one of the foci of the planets' orbits.
eccentricityHow much an ellipse is not like a circle. Formula is: focal distance divided by major axis
ellipseThe shape of all the planets' orbits. However, the orbits all look circular.
solsticeFirst day of winter and summer.
The north pole gets 0 hours of sun on the winter solstice. The north pole gets 24 hours of sun on the summer solstice.
EquinoxFirst day of spring and fall. The north pole (every place on Earth) gets 12 hours of sun on both equinoxes.
Winter SolsticeOccurs in December. Earth is closest to the sun and revolves fastest.
Spring EquinoxOccurs in March.
Summer SolsticeOccurs in June. Earth is furthest from the sun and revolves slowest.
Fall EquinoxOccurs in September.