Motion and Measurement
What is the measurement of how far something moves from its starting point to its ending point?
Distance
What name do we give to tiny packets of energy that make up light?
Photons
How is sound produced?
Vibrations
Which unit is best for measuring the length of a pencil: kilometers, meters/centimeters, miles, or hours?
Meters (m) or centimeters (cm).
Which color photons have more energy, violet or red?
Violet light photons.
Which property of sound tells us how loud or soft a sound is?
Volume
A person runs 100 meters in 5 seconds. What is the average speed in meters per second?
100 รท 5 = 20 meters per second (20 m/s).
What is the term for the distance between the peak of one wave and the peak of the next?
Wavelength
What unit is used to measure loudness?
Decibel
Which term describes both speed and direction together?
Velocity
Light travels about how far in one second?
300,000 kilometers (186,000 miles).
Which example from the exam is a high-pitched sound: a deep drum beat, thunder, a whistle, or a large bell far away?
A whistle
Give an example from the exam that best shows acceleration (one sentence).
The train increased its speed as it left the station (acceleration)."
Explain in one sentence why we see color.
"We see color because objects reflect the color we see and absorb the colors we don't see."
What causes an echo?
An echo is caused when sound waves bounce off a hard surface and return to the listener.