Earth and Space Science Vocab Set #2

11 terms by ChristineCarmody 

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Propagation

To move through, cause to move through, or transmit, expecially in the form of a wave

Lunar

Of, determined by, relating to, or resembling the moon

Seismometer

An instrument for measuring the direction, intensity, and duration of quakes on earth or another body by measuring the actual movement of the ground

Seismic Wave

A planetary vibration/wave generated by an earthquake, moonquake, impact, or explosion

Meteoroid

Any of the small bodies, often remnants of comets, traveling through space

Attenuation

A discrease in a property, as energy, per unit area of a wave or a beam of particles, occuring as the distance from the source increases as a result of absorption, scattering, spreading in three dimensions

Dispersion

The action or process of distributing things or people over a wide area

Receding

Go or move back or further away from a previous position

Corner Cube Reflector

Reflective devices placed on the surface of the moon allow laser beams to be redirected back to earth

Variation

1 a change or difference in condition, amount, or level, typically with certain limits 2 a different or distinct form or version of something

Precession

The slow movement of the axis of a spinning body around another axis due to a torque (such as gravitational influence) acting to change the direction of the first axis

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