List of Words for Letter ‘M’
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magma Hot, melted rock below Earth’s surface.
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magnetic field An invisible area
where the forces of magnetic attraction or repulsion
can be detected.
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magnitude The amount of energy released by an earthquake.
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mantle The layer
of Earth beneath the crust..
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mass The amount
of matter in an object.
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mass wasting Erosion
caused by Earth’s gravity
pulling materials from high places to low places.
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mechanical advantage The number of times a simple machine multiplies
an effort force.
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meiosis The special kind of cell division
in which sex cells are produced with half as many
chromosomes as in other cells.
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melting point The temperature
at which a solid melts to become a liquid.
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metamorphic rock A rock
that forms from other rocks
which have changed from
heat, pressure, or a chemical
reaction.
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meteor A meteoroid that enters
Earth’s atmosphere and
burns with a streak of light.
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meteorite Any part of a meteoroid that
reaches Earth’s surface.
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meteoroid A small, rocky object that
orbits the Sun in both the inner and outer regions of
the solar system.
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microbe An organism so small that it can
be seen only with a microscope.
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microorganism An organism
that is not visible to the unaided eye.
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migrate To move from one place to
another.
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Milky Way The medium-sized spiral
galaxy that is our home galaxy.
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mimicry An adaptation in which
an animal is protected against predators by its
resemblance to a different animal.
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mineral Any of the naturally occurring
solid materials of Earth’s crust.
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mirror An object with a polished or smooth
surface that forms images by reflection.
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mitosis The division of the nucleus while
a cell is dividing into two identical cells.
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mixture A physical combination of two
or more substances that blend together without
forming new substances.
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molecule The smallest particle of a
compound that still has
all the qualities of that
compound.
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momentum The mass of an object
multiplied by its velocity.
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moon Any large object that orbits a planet.
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moraine The sediment that forms in front
of or along the sides of a glacier.
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motion A change in an object’s position
compared to fixed objects around it.
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mutation A change in an organism’s
DNA.