Astronomy Module 3 Review Part 1

What does Kepler's second law imply about a planet's speed?

• It is constant throughout the orbit

• It varies, being fastest when closest to the Sun

• It is slowest when closest to the Sun

• It stops at the farthest point

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What does the variable 'G' represent in Newton's Universal Law of Gravitation?

• Gravitational mass

• Universal constant for gravity

• Distance between objects

• Mass of the Earth

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What is the main variable used for distance in the Universal Law of Gravitatational Force equation?

• d

• r

• G

• M

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What is the acceleration of gravity used to compare?

• The speed of light

• How small objects speed up when falling

• The force of magnetism

• The speed of sound

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What does the term "emit" refer to in the context of light?

• An electron in an atom taking in electromagnetic energy

• An electron in an atom sending out electromagnetic energy

• The reflection of light from a surface

• The absorption of light by a material

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What is the electromagnetic spectrum?

• A range of visible light colors

• An ordering of all possible frequencies and wavelengths of light

• A measure of light intensity

• A type of electromagnetic radiation

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What did James C. Maxwell explain about light in 1865?

• Light is a particle

• Light is a wave that moves through an electromagnetic field

• Light is absorbed by matter

• Light is emitted in quantized amounts

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Which type of light is just beyond red and is also considered "thermal" energy?

• Ultraviolet

• Infrared

• Microwave

• X-rays

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What kind of electromagnetic radiation can be detected by human eyes?

• Microwaves

• X-rays

• Visible light

• Radio waves

What is the significance of the diameter of a telescope in terms of resolution?

• It has no significance

• Larger diameter provides better resolution

• Smaller diameter provides better resolution

• It changes the color of the image