24-25 Unit 12 Vocab
Quiz by REBECCA ROSENDAHL
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- Q1
The Sun together with the group of celestial bodies that are held by its attraction and revolve around it.
Solar System
30s - Q2
An object that orbits a star, is large enough to be nearly spherical in shape, and has no other large object in its orbital path.
Planet
30s - Q3
The path an object follows as it moves around another object.
Orbit
30s - Q4
An object in orbit around a larger object.
Satellite
30s - Q5
Objects in orbit move along an imaginary flat, disk-like surface.
Orbital Plane
30s - Q6
A stretched-out circle.
Ellipse
30s - Q7
The measure of how far an object’s orbit is from being circular.
Eccentricity
30s - Q8
An attractive force that exists between all objects that have mass.
Gravity
30s - Q9
A measure of how hard it is to stop a moving object.
Momentum
30s - Q10
The tendency for objects in motion to resist changes to their direction and speed (velocity).
Inertia
30s - Q11
The time it takes an object to travel once around the Sun.
Period of Revolution
30s - Q12
The time it takes an object to complete one rotation.
Period of Rotation
30s - Q13
The average distance from Earth to the Sun (about 150 million km).
Astronomical Unit (AU)
30s - Q14
The distance light travels in one year (about 9.5 trillion km).
Light-Year
30s - Q15
The star in the center of our solar system around which the planets revolve and receive light.
Sun
30s