Science Benchmark Review Part 4 (Jones) Question Preview (ID: 42127)


Review Of Discovery Ed Science Benchmark. TEACHERS: click here for quick copy question ID numbers.

The food that is produced lasts longer without spoiling.
a) It attracts both water and oil molecules so they can rinse away together.
b) It kills bacteria, which weakens the oil.
c) It absorbs the oil and repels the water.
d) It heats the oil and causes it to evaporate.

A chemical taken from certain plants has been proven to work as a pesticide. This is the hypothesis: The chemical is from nature, so it will not have any negative effects on the environment. How might you first go about testing this hypothesis safely
a) Perform a set of tests on humans to find out whether the chemical is safe.
b) Perform lab tests of basic chemical reactions involving the test substance.
c) Perform a set of tests on rats to see the effects of the chemical on mammals.
d) Conduct a field study to see how the chemical interacts with its test environment.

Friction is a ___.
a) form of gravity
b) form of energy
c) force
d) form of matter

Friction is caused by the ___ of objects, liquids, or gases moving past each other.
a) resistance
b) conversion
c) ease
d) inability

What effect does friction have on a moving object?
a) It causes the moving object to slow and eventually stop.
b) It causes the moving object to speed up.
c) It keeps the moving object moving in the same direction forever.
d) It causes the moving object to turn around and move in the opposite direction.

The sea level boiling point of water on the Fahrenheit scale is ___.
a) 100 degrees
b) 112 degrees
c) 124 degrees
d) 212 degrees

When molecules in a substance vibrate faster and faster, what happens to the temperature of the substance?
a) It stays the same.
b) It gets warmer.
c) It gets colder.
d) It depends on the change in speed of the vibrations.

What happens to the molecules as water freezes?
a) The water molecules stop moving.
b) The water molecules move faster.
c) The water molecules slow down.
d) The water molecules react chemically to form ice molecules.

What is Mrs. Jones's room number?
a) 217
b) 222
c) 223
d) 216

How many lunch shifts do we have?
a) 1
b) 4
c) 2
d) 3

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