General
A process of comparing a property to a well-defined and agreed-upon referent is called
What is a measurement?
A straight-line distance covered during a certain amount of time describes an object’s
What is speed?
The smallest units of matter with the characteristic properties of a substance
What is a molecule?
In general, sounds travel faster in
What is solids?
The part of the electromagnetic spectrum that our eyes can detect is
What is visible light?
A tentative scientific explanation which may or may not be rejected upon further experimentation is called
What is a hypothesis?
How fast an object is moving in a particular direction is described by
What is velocity?
The transfer of heat that takes place by energy moving through space is
What is radiation?
A reflected sound that reaches the ear after 0.1 s after the original sound results in
What is an echo?
A substance that has strong magnetic properties
What is iron?
A hypothesis concerned with a specific phenomenon is found to be acceptable through many experiments over a long period of time. This hypothesis usually becomes known as a
What is a theory?
A change of direction or speed describes
What is acceleration?
The transfer of heat that takes place directly from molecule to molecule is
What is conduction?
The characteristic of a wave that is responsible for what you interpret as pitch is the wave
What is frequency?
The electrical resistance of a conductor is measured in units of
What is ohms?
Which metric unit is used to express a measure of weight
What is kilograms or grams?
Ignoring air resistance, an object falling toward the surface of the Earth has a velocity that is
What is increasing?
Radiation is the only method of heat transfer that can take place in a
What is a vacuum?
The lowest frequency of a periodic waveform is called
What is the fundamental frequency or 1st harmonic?
The electrical potential difference between two points in a circuit is measured in units of
What is a Volt?
The ratio of mass per volume is called
What is density?
A measure of the force of gravity acting on an object is called
What is weight?
The average kinetic energy of molecules in a substance describes
What is heat?
Longitudinal waves with a frequency above 20,000 Hz are called
What is ultrasonic?
An electric field describes the condition of space around
What is a charged particle?