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Earth’s Orbit & Rotation

Teacher: N. Sterling
Horizontales
The action of the earth turning or spinning around its center. The earth does this spin once every 24 hours. Causes Day and Night.
An ancient model of the solar system which we know today is not correct. It puts earth at the center of the solar system and says that everything orbits around the earth. Today we know that the earth orbits around the sun.
A group of stars that form a recognizable shape such as the big dipper. Today there are about 90 of them
A model of the solar system which puts the Sun at the center and says that the plants orbit around the sun. Today we know that this model is correct.
An ancient tool used to tell time during the day. Part of it casts a shadow onto a flat surface marked in hours. It works due to Earth’s rotation.
Once every 4 years when one additional day added to the month of February. Since one orbit of the earth around the sun is 365.25 days, this is done to correct the calendar.
Prefix that means "earth."
The path an object follows as it moves around another one. Earth moves in a circle around the sun once every 365.25 days. Causes the different seasons.
Verticales
The apparent shift of position of some stars through the year. The Heliocentric model was able to explain this.
A dark shape made when an object blocks light. When you stand outside, your body blocks sunlight and makes one.
A tool that provides evidence that the earth is rotating. It is made of a heavy weight hanging from a long wire which swings back and forth. The direction of the swinging ball appears to change due to Earth’s rotation.
An area on Earth that has a specific time that all people living there can set their clocks to. There are 24 different ones. Florida is in the Eastern Time Zone, Chicago is in the Central time Zone.
Is made up of the sun, 8 planets and their moons. The planets all orbit around the sun and moons orbit around a planet.
Prefix that means "relating to the sun."
Suffix that means "in the center."