Second 9 Weeks Exam Review: Question Preview (ID: 28415)

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What is density?
a) The amount of weight an object has.
b) The amount of space an object takes up.
c) The amount of matter in a given amount of space.
d) The number of atoms in a molecule.

Why does a metal spoon in a pot of hot water get hot?
a) radiation
b) conduction
c) convection
d) burning

What type of energy is light?
a) electrical
b) nuclear
c) electromagnetic
d) chemical

How does a thermometer work?
a) The red liquid contracts and rises when the temperature is hot.
b) The red liquid expands and rises when the temperature is hot.
c) The red liquid contracts and rises when the temperature is cold.
d) The red liquid expands and rises when the temperature is cold.

The following are all signs that a chemical change may have taken place.
a) change in color, state of matter, odor, bubbles form
b) temperature change, shape change, light produced
c) solid forms, temperature change, color change, odor
d) color change, odor, density, bubbles form

What kind of stored potential energy is found in fuels?
a) gravitational potential energy
b) chemical potential energy
c) elastic potential energy
d) solar potential energy

Which of the following is not a form of energy?
a) heat
b) light
c) friction
d) electricity

How would you increase your potential energy?
a) Increase your speed and mass
b) Increase your speed and distance
c) Increase your mass and height
d) increase your mass and volume

How does heat get from the sun to the earth?
a) radiation
b) convection
c) photosynthesis
d) conduction

Why does ice float in water?
a) Ice has less mass than water.
b) Ice is more dense than water.
c) Ice is less dense than water.
d) Ice has more mass than water.

When a liquid changes to a gas, this is called
a) condensation
b) evaporation
c) sublimation
d) freezing

What tool is used to measure the volume of a liquid?
a) balance
b) graduated cylinder
c) spring scale
d) meter stick

On the periodic table, the atomic number tell you
a) the mass of the atom
b) the number of protons or electrons
c) the number of neutrons
d) the number of valence electrons

Two or more different atoms combine chemically to form a new substance called
a) a molecule
b) an atom
c) a compound
d) a mixture

If you were to travel to the moon, your weight would remain the same, but your mass would change.
a) True
b) False

What energy transformation takes place in a dam?
a) chemical to electrical
b) electrical to mechanical
c) mechanical to nuclear
d) mechanical to electrical

What does 'heat is a one way street' mean?
a) heat only travels from cooler areas to warmer areas.
b) heat only travels from east to west.
c) heat only travels from warmer areas to cooler areas.
d) heat only travels from top to bottom.

In what state of matter do the molecules move freely and slide past each other?
a) gas
b) liquid
c) solid
d) plasma

In which state of matter to atoms move so quickly that the electrons escape from the electron cloud?
a) gas
b) liquid
c) solid
d) plasma

Everything in the universe is made of tiny particles called
a) protons
b) neutrons
c) atoms
d) molecules

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