Final Exam 2017 - Science

Reflected sound is known as a(n) 

• echo
• elipse
• reverb
• megahertz

A block appears red because

• it absorbs all colors except red.
• it absorbs only red and yellow light.
• it reflects red light and absorbs all other colors.
• it reflects all colors except red.

The _________ of a sound wave indicates how much energy it has.  When this is high, a sound will be loud.

• hertz
• frequency
• millimeters
• amplitude

To find out how hot something is, we measure its            , or the average kinetic energy of its particles. 

• heat
• thermal energy
• conduction
• temperature

The metric unit for measuring temperature is

• heat
• friction
• Celsius
• temperature

On which temperature scale does water freeze at 0 degrees and boil at 100 degrees?

• Fahrenheit
• Celsius
• Kelvin
• Calvin

When you touch something that feels cold, 

• heat from your hand moves into the cold substance.
• coldness moves from the cold substance into your hand.
• it melts.
• it freezes.

This variable in an experiment is the one being changed by the scientist. 

• dependent (responding) variable
• independent (manipulated) variable
• observations
• control group

What measures the space that something takes up?

• Density
• Distance
• Mass
• Volume

How many variables should be tested in a controlled experiment?

• one
• two
• three
• as many as possible