Just in case someone has forgotten their study guide, here is another copy!
Chapter 6 Science Study Guide
•
Light travels in
a straight path.
•
A pan balance is
used to measure mass.
•
All substances
are made of matter.
•
Matter is made up
of particles that cannot be seen.
•
In a liquid, the
particles of matter can move more than they can in a solid.
•
A solid has a
definite shape and takes up a definite amount of space.
•
A liquid does not
have a definite shape but takes up a definite amount of space.
•
A gas does not have
a definite shape nor does it take up a definite amount of space. A gas does
have volume and mass.
•
An object that
absorbs all light that strikes it looks black.
•
Density can be
found when you divide the mass of an object by its volume.
•
Matter is anything
that has mass and takes up space.
•
Weight measures
the amount of gravity between an object and a planet.
•
Light is not
considered matter because it does not take up space.
•
Volume is how
much space a substance takes up.
•
The metric unit
for weight is the newton (N).
•
The metric unit
to measure mass is a gram.
•
A kilogram is the
same as 1,000 grams.
•
A marble has more
mass than a piece of popcorn (even theough they are similar in size) because
the particles inside a marble are packed together more tightly than the
particles in a piece of popcorn.
•
Objects weigh
less on the Moon thean they do on Earth because the pull of gravity on the Moon
is much less that the pull of gravity on the Earth.
•
An object's
length is the number of units that fit from one end to the other.
•
All matter has
mass, volume, and state.
•
An object will
float when its density is less than the density of the liquid or gas in which
it is placed.
•
The pull of
gravity is stronger the more mass it has.
•
A physical change
begins and ends with the same type of matter.
•
A change of state does not affect an object's mass.
•
When any liquid
(EXCEPT water) is cooled, the particles move closer together.
•
Boiling is a
change of state from a liquid to a gas.
•
A change of state
is a physical change in which one state of matter changes to another.
•
Boiling and
evaporation cause liquids to turn into gases.
•
Cutting, crushig,
tearing, bending, and stretching matter are all physical changes.
•
If you add heat
to a solid, its particles move faster.
•
Nuclear energy
comes from the tiniest particles of matter.
•
Radiant energy
can move through both air and space.
•
A concave lens
causes light to bend outward from the center so light rays spread out.
•
A convex lens
bends light rays toward the center.
•
White light is
made up of every color of light.
•
Glasses and a
hand lens have convex lenses.
•
A lens refracts
light.
•
Light bounces off
an object in reflection.
•
Glasses with
concave lenses will help you to see objects that are far away.
•
Light travels
through the eye from the cornea to the pupil to the iris to the retina.
BE FAMILIAR WITH THESE
VOCABULARY WORDS AND THEIR DEFINITIONS
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absorption
•
change of state
•
convex lens
•
density
•
length
•
mass
•
matter
•
opaque
•
physical change
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radiant energy
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reflection
•
refraction
•
solar energy
•
states of matter
•
weight
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