# Earth's Orbit and Rotation

## Quiz by Sean Barnes

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12 questions
• Q1
An orbit is the path an object follows as it moves around another one. Earth moves in a circle around the sun once every 365.25 days. We call that path Earth's orbit.
Earth's Orbit
30s
• Q2
The action of the earth turning or spinning around its center. If you stand in one place
Earth's Rotation
30s
• Q3
Our solar system is made up of the sun, 8 planets and their moons. The planets all orbit around the sun and moons orbit around a planet.
Solar system
30s
• Q4
A dark shape made when an object blocks light. When you stand outside, your body blocks sunlight and that makes a shadow.
30s
• Q5
A tool that provides evidence that the earth is rotating. It is made of a heavy weight
Foucault pendulum
30s
• Q6
A group of stars that form a recognizable shape such as the big dipper. Today there are about 90 constellations
Constellations
30s
• Q7
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. "Geo" means earth and "centric" means in the center. Today we know that the earth orbits around the sun.
Geocentric Model
30s
• Q8
A model of the solar system which puts the Sun at the center and says that the planets orbit around the sun. "Helio" means relating to the sun and "centric" means in the center. Today we know that this model is correct.
Heliocentric Model
30s
• Q9
The apparent shift of position of some stars through the year. This was not able to be explained by the Geocentric model which said that everything orbited the earth. The Heliocentric model was able to explain this illusion.
Stellar Parallax
30s
• Q10
A year with one additional day added. We have leap years every 4 years because one orbit of the earth around the sun is 365.25 days. Our normal calendar has 365 days so every 4 years we have a leap year which adds an extra day.
Leap Year
30s
• Q11
An area on Earth that has a specific time that all people living there can set their clocks to. There are 24 different time zones.
Time Zone
30s
• Q12
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.
Sundial
30s

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