Introduction to Science
Energy
Solar System
Weather
Water
100
Which scientific skill are you using when you see that the sky is cloudy?
making an observation drawing a conclusion
making an inference posing a question
making an observation
100
The ability to do work is called
energy
100
The model in which Earth is at the center of the system of planets is called the
geocentric system.
100
Thunderstorms form within
high cirrocumulus clouds.
large cumulonimbus clouds.
low cirrus clouds.
large cumulonimbus clouds.
100
When water evaporates, it becomes a
Gas
200
What type of scientist would track an approaching storm?
meteorologist
200
The energy associated with motion is called
kinetic energy.
gravitational potential energy.
nuclear energy.
kinetic energy.
200
Earth is unique among the planets because of
its rocky surface.
its oceans.
the direction in which it rotates.
its oceans
200
Weather forecasting has improved recently because of
fewer weather changes from year to year.
more experienced weather forecasters.
computer technology.
television reporting.
computer technology
200
Tightness across the surface of water that is caused by polar molecules pulling on each other is called
a. surface tension.
b. capillary action.
c. condensation.
d. polar action.
surface tension.
300
Which of the following might an environmental scientist study?
the ages of stars the effects of pollution on fishes
changes in the climate
how landforms are changed by ocean waves
the effects of pollution on fishes
300
Which of the following has kinetic energy?
a rock poised for a fall
an archer's bow that has been drawn back
a rolling bowling ball
a car waiting at a red light
a rolling bowling ball
300
Venus and Earth are much alike in terms of -
their size and density.
their rates of rotation.
their atmospheres.
their size and density
300
People who study weather and try to predict it are called
meteorologists.
300
A mixture that forms when one substance dissolves another is called a
a. solution.
b. solvent.
c. polar substance.
d. molecule.
solution
400
The factor that a scientist changes during a controlled experiment is called the
Independent Variable or the manipulated variable.
400
Energy conversion means
a. that energy can be created but not destroyed.
b. that energy can be destroyed but not created.
c. not wasting energy.
d. that most forms of energy can be converted into another form.
that most forms of energy can be converted into another form.
400
Earth's rotation takes about -
24 hours
400
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On weather maps, a line with half circles indicates
a warm front.
400
If you let your hair air-dry after going swimming, you are taking advantage of
evaporation condensation.
melting freezing
evaporation.
500
A controlled experiment is designed to test
a hypothesis.
500
Fossil fuels contain energy that originally came from
the sun.
500
Earth has seasons because
Earth's axis is tilted as it moves around the sun.
500
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Cold Front
500
An example of a solution is
fog.
shaving cream.
salt and water.
pepper and water.
salt and water.
600
Your teacher hands out a copy of a laboratory experiment. What is the first thing you should do to conduct the experiment safely?
Obtain and open any materials described in the experiment.
Review the lab and the safety procedures with your teacher.
Mix your materials with those of another group to save time.
Begin heating any materials that will need to be hot.
Review the lab and the safety procedures with your teacher.
600
When you rub your hands together on a cold day, you use friction to convert
electrical energy into electromagnetic energy.
thermal energy into nuclear energy.
nuclear energy into electrical energy.
mechanical energy into thermal energy.
mechanical energy into thermal energy.
600
One complete revolution of Earth around the sun takes about
one year.
600
To be classified as a hurricane, a tropical storm must have winds of at least
75 kilometers/hour.
100 kilometers/hour.
119 kilometers/hour.
139 kilometers/hour.
119 kilometers/hour.
600
Water is the only substance on Earth that
commonly exists in all of its different states at the same time.