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History
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vocabulary
100

the most widely accepted cosmological explanation for how the universe formed

what is the Big Bang theory? 
100

a group of stars forming a recognizable pattern that is traditionally named after its apparent form or identified with a mythological figure

what is a constellation? 
100
Who compiled an extensive star chart of 850 stars using just his eyes? 
Hipparchus 
100

An ancient tool that was used to solve problems relating to time and the position of the Sun and stars in the sky.

what is an astrolabe? 
100
celestial bodies that orbit a star 
what are planets?
200
Earth is at the centre. The sun has an orbit that rotates around the earth. 
Geocentric Model 
200
Which Canadian astronaut was in space for the longest period of time? 
Robert Thirsk 
200
The science of astronomy began when ____________ & ____________ began keeping accurate records and developed charts of sky patterns. 
hunters & farmers 
200

The distance, in degrees, above the observer’s horizon


what is the altitude?
200

a celestial object consisting of a nucleus of ice and dust and, when near the sun, a “tail” of gas and dust particles pointing away from the sun

what is a comet?
300

A small circle whose center moves around the circumference of a larger one. Hipparchus used this concept to help explain the movement of planets in a geocentric system. 


Epicycles 
300
Which Canadian astronaut was responsible for installing the Canadarm? 
Chris Hadfield 
300
_____________ civilization was the first to break away from mythology and superstition when considering the movement of stars and planets. 
Greek 
300

The direction, in degrees, on the 360 degree circle that is all around us. 


what is the azimuth?
300

large system of stars held together by mutual gravitation and isolated from similar systems by vast regions of space

what is a galaxy? 
400

In the geocentric model, spheres that rotated around Earth carried stars, planets, and the Sun. Earth was a spherical ball in the centre of the spheres and was therefore the centre of the universe. 



what is The Celestial Sphere? 
400

The distant galaxies we see in all directions are moving away from the Earth, as evidenced by their red shifts. 

What is Hubble's Law?
400

Who developed the concept that spheres that rotated around Earth carried stars, planets, and the Sun. Earth was a spherical ball in the centre of the spheres and was therefore the centre of the universe

Aristotle 
400

149,597,870 km

what is the distance of 1AU? 
400

When a planet wanders backwards in terms of its initial motion

what is retrograde motion? 
500

excessive and inappropriate artificial light

what is light pollution? 
500

an increase (or decrease) in the frequency of sound, light, or other waves as the source and observer move toward (or away from) each other

what is the Doppler effect?
500
Who declared that the Sun was a huge ball of fire and that the Sun, planets, and stars did not revolve around Earth, but that Earth and other planets revolved around the Sun? 


Aristarchus 
500
10 trillion km 
what is the distance of 1 light year? 
500

consists of the Sun, and everything bound to it by gravity

what is a solar system?