Vocabulary Words of the Unit "The Massive Movement Project Final Assessment"

The Massive Movement Project Final Assessment

Topic	Vocabulary Words & Definition
Geocentric vs. Heliocentric Models	Astronomy- The study of space and other objects in the universe Geocentric model- A theory that proves that the earth in the center of universe Heliocentric model- A theory that proves that the sun in the center of universe Ptolemy- A person who thinks earth in the center of universe  Copernicus- A person who thinks sun in the center of universe Revolution- Movements of the earth around the orbit
Rotation	Rotation- The spinning of earth on its tilt (24 hour)  Polaris- Polaris is a star which helps us find the north polis Earth's Axis- Imaginary line in the middle of the earth  Axis Tilt (how much)- The earth's axis tilted 23.5 Hemisphere- Half of the earth (northern hemisphere and southern hemisphere) Equator- An imaginary line that divided earth into two equal parts
Revolution	Revolution Length (how long)- For the earth it is close to 365.25 days. Orbit- It is curved path of an object   Ellipse- A rounded line around the sun  Constellation- Group of many stars  Perihelion- Perihelion (earth) round around the sun on one side (far from the sun)   Aphelion- Aphelion (earth) round around the sun on the other side (close to the sun)
Standard Time Zones	longitude- Longitude is a line to specified east west to east position. Prime Meridian- Prime meridian is a longitude that located at 0 degree. International Date Line (IDL) - An imaginary line that starts from north and ends at south (east side is one day earlier than west) Greenwich Mean Time (GMT)- Solar time on the 0 degree meridian that pass through Greenwich England
Seasons	Direct sunlight- When the earth is getting straight sunlight (summer) Indirect sunlight- When earth is not getting straight sunlight (winter)
Solstices	Winter Solstice- When the sunlight direct in the southern hemisphere it is less sun of the year (Dec 21/22) Summer Solstice- When the sunlight direct to the northern hemisphere it is most sun of the year (June 21/22)
Equinoxes	Equinoxes- When the night and days in 12 hour are equal Spring Equinox (date) - March 21/22 Fall Equinox (date) - September 21/22
Solar Eclipses	Lunar revolution- The movements of moon around the earth (27-29 days) Total solar eclipse- Moon cover the whole sun Partial solar eclipse- Moon cover a part of the sun Umbra- When moon completely cover the sun is called umbra Penumbra- When moon cover the sun only part of it
Lunar Eclipses	Total lunar eclipse- When moon is umbra Partial lunar eclipse- When moon is penumbra
Phases of the Moon	Phases of the moon- Phase of the moon is how the moon looks like in different forms Waxing- Waning is decrease the part of the moon Waning- Waxing is increase the part of the moon New moon- When moon is almost entirely black but the part of it its white (new) Gibbous moon- When moon is less than its half  Quarter moon- When moon is completely half Crescent moon- When moon is more than half Full moon- When moon is completely white (full)
Spring Tide	Tides (high and low)- A giant water wave that caused by the gravity of moon & earth and rotation of earth. When moon, sun and earth line on at one line, it will become high tide. When moon, sun and earth line at 90 degree it will have a low tide Water Level & Sea Level- The level of water moves because the movements os moon around the earth Gravitational force from the moon on earth- When gravity of moon caused ocean water to move Spring Tides- When three of the planets (sun, moon, earth) are in one straight line so it maximize the gravity of the tide is either really high or really low
Neap Tide	Neap Tides- When three of the planets (sun, moon, earth) are in one straight line so it minimize the gravity of the tide is really low