SSA Vocabulary Test-Unit 8

Use the word banks to complete the following definitions: (a)   is the path a body follows as it travels around another body in space.

• Dwarf planet
• Orbit
• Satellite
• Asteroid

The Sun is in the center of the solar system.

(a)  

• Geocentric

• Heliocentric

The Earth is in the center of the solar system.

(a)  

• Geocentric
• Heliocentric

Rounded by gravity, orbiting the Sun, but ______________ has not cleared its

orbit of debris.

• a planet
• a star
• a comet
• a dwarf planet

The force of attraction between objects that is based on mass and the distance between them.

• Nuclear force
• Frictional force
• Electromagnetic force
• Gravitational force

A rocky or metallic object that orbits the Sun and is much smaller than a planet.

(a)  

• Planet
• Moon
• Comet
• Asteroid

The four planets nearest to the Sun can be classified as ___________________.

• gas giants
• dwarf planets
• terrestrial planets
• ice giants

Gas Giants are planets with deep, massive atmospheres.

• Earth is a Gas Giant.
• Jupiter is a Gas Giant.
• Mars is a Gas Giant.
• Venus is a Gas Giant.

Gravitational force increases as the mass of an object increases.

• Newton's Law of Universal Gravity

• Kepler's Laws of Planetary Motion

• Einstein's Theory of General Relativity

• Hubble's Law of Cosmic Expansion

Needed to keep an object moving in a circular path.

• Centripetal force
• Gravitational force
• Frictional force
• Magnetic force