Edit Game
Chapter 15: Energy - Review and Practice
 Delete

Use commas to add multiple tags

 Private  Unlisted  Public



 Save

Delimiter between question and answer:

Tips:

  • No column headers.
  • Each line maps to a question.
  • If the delimiter is used in a question, the question should be surrounded by double quotes: "My, question","My, answer"
  • The first answer in the multiple choice question must be the correct answer.

 Import questions





 Save   23  Close
Summarize the change in both wavelength and energy as you move from radio waves to gamma rays on the electromagnetic spectrum.
radio waves have long wavelength - therefore low frequency and low energy; gamma rays have short wavelengths - therefore high frequency and high energy
Using the image, describe at which end of the visible spectrum would you place RED? Which end would you place VIOLET?
RED - at the 'low energy end' of the visible spectrum (just after 'infraRED' and VIOLET - at the 'high end' of the visible spectrum (just before 'ultraVIOLET')
What color is the object in the image? How do you know?
Green - it is the only color reflected (not absorbed) by the object.
From what height would a 10 kg rock fall from if it had a gravitational potential energy is 18000 J.
PE = m•g•h , so: m = PE/m•g = 183 m
A 10 kg rock is dropped and hits the ground below at a speed of 60 m/s. Calculate the gravitational potential energy of the rock before it was dropped.
PE = KE = ½mv² = 18000 J
A 0.49 kg squirrel jumps from a tree branch that is 3.6 m high to the top of a bird feeder that is 1.5 m high. What is the change in gravitational potential energy of the squirrel?
PE (tree) = 17.3 J PE (feeder) = 7.2 J Change in PE = 10.1 J
A 4 kg cat is resting on top of a bookshelf that is 2 m high. What is the cat's gravitational potential energy relative to the floor?
PE = m•g•h = 78.4 J
A 12 kg sled is moving at a speed of 3.0 m/s. At which speed will the sled have about twice as much kinetic energy?
4.2 m/s
A small 30 kg canoe is floating downriver at a speed of 2 m/s. What is the canoe's kinetic energy?
KE = ½mv² = 60 J
What is the unit for ENERGY called?
Joule = (N • m ) = (kg•m/s² •m)
Infrared rays have shorter wavelength than ______.
radio waves
The visible light spectrum ranges between ________.
infrared and ultraviolet
The full range of frequencies of electromagnetic radiation is called _____.
electromagnetic spectrum
The electromagnetic waves with the highest frequency are _____.
gamma rays
Electromagnetic waves _____.
can travel through empty space
The law of conservation of energy states that _______.
energy cannot be created or destroyed
An example of conversion of gravitational potential energy into kinetic energy is ____.
a falling raindrop
Mechanical energy is _________.
the sum of the kinetic and potential energy of an object
Energy stored in bonds between atoms is what type of energy?
chemical
An example of electromagnetic energy is ______
sunlight
An example of an object having elastic potential energy is _______.
a stretched spring
If the speed of an object doubles, it's kinetic energy ______.
quadruples
The energy of a moving object is what type of energy?
kinetic
Your experience on this site will be improved by allowing cookies.