The Universe - Definitions to terms Flashcards
1
Q
What is the star at the center of our solar system?
A
The Sun
2
Q
What is a celestial body that orbits a star, has enough mass to form into a round shape, and has cleared its orbit of any objects of similar size?
A
A Planet
3
Q
The elliptical path of a celstial object or spacecraft called?
A
Its Orbit
4
Q
What is a group of planets and other bodies that revolve around a star called?
A
A Solar System
5
Q
What is s concentration of stars, gas, dust, and dark matter held together by gravity?
A
A Galaxy
6
Q
What is an object that orbits a planet called?
A
A Moon
7
Q
What is the shift of a wave’s frequency due to the movement of the observer called?
A
The Doppler Effect
