As part of his job at the U.S. Forestry Service, Scott uses satellite images to identify forest areas that have been cleared due to logging. The satellite images, which show forests appearing cooler and cleared areas appearing warmer, are produced using electromagnetic radiation. Which part of the electromagnetic spectrum does Scott’s technology most likely use?
  • infrared radiation
  • gamma rays
  • radio waves
  • visible light
When NASA scientists communicate with the mars rover they use electromagnetic radiation with a long wavelength and low energy. Which type of radiation do they most likely use?
  • X-rays
  • visible light
  • radio waves
  • infrared waves
Light can sometimes create an optical illusion. For example, you may see something under water and reach into the water to pick it up. However, the object is not where you thought it would be. What property of light is responsible for this optical illusion?
  • absorption
  • reflection
  • refraction
  • transmission
What is the name given to the substance through which a wave travels?
  • a crest
  • a frequency
  • a medium
  • a state
A wave will travel only as long as it has ____ to carry.
  • Energy
  • Mass
  • Matter
  • Amplitude
How does the sun transfer energy to Earth?
  • by mechanical waves
  • by Earth revolving around the sun
  • by electromagnetic waves
  • by Earth’s rotation
If you are lying on a raft, and you notice that the number of waves that go past the raft increases, you also find that the distance between each crest ____.
  • Increases
  • Decreases
  • Remains the same
  • Spreads out
Electromagnetic waves ____.
  • Are compressed waves
  • Are transverse waves
  • Must have a medium
  • Are generated by static electricity
____ are used for medical imaging.
  • Ultraviolet waves
  • Infrared waves
  • X rays
  • Gamma rays
The part of the electromagnetic spectrum usually used for communication is ____.
  • Radio waves
  • Infrared red
  • Ultraviolet waves
  • Gamma rays
An electromagnetic wave from the sun travels through space
  • At the speed of light
  • At the speed of sound
  • at twice the speed of sound
  • at half the speed of light
In a vacuum, all electromagnetic waves have the same ________.
  • Wavelength
  • Frequency
  • Speed
  • Amplitude
When you listen to the radio, watch TV, or cook food in a microwave, you are using a device that makes use of man-made electromagnetic waves. Which statement about electromagnetic waves is false?
  • Electromagnetic waves travel at the speed of light.
  • Electromagnetic waves need a medium to travel through.
  • Different frequencies of light are interpreted by our eyes as different colors.
  • The transfer of energy as electromagnetic waves is called electromagnetic radiation
The electromagnetic waves with the highest frequencies are called
  • Radio waves
  • Gamma rays
  • X rays
  • Visible Light
The chart below shows the average distance in astronomical units between each planet and the Sun.Based on the table, which planet orbits the Sun closest to Earth?
  • Mars
  • Mercury
  • Jupiter
  • Venus
Why does the straw appear to be bent?
  • light is reflected
  • light is absorbed
  • light is turned
  • light is refracted
What is the best explanation for Mickey seeing himself in the mirror?
  • refraction
  • absorbed
  • reflection
  • flipped
When light hits an area and bounces back it is called:
  • echo
  • refraction
  • reflection
  • absorbing
Sound waves travel at different speeds through different materials. Which sound wave would travel the fastest speed?
  • sound waves generated by fireworks that explode in the sky
  • sound waves generated by an earthquake that shake the ground
  • sound waves generated by a thunderstorm
  • sound generated by whales communicating with each other in the ocean.
Light waves travel at different speeds through different materials. Which list shows the correct order of increasing speed of light waves in materials, from slowest to fastest?
  • solids → liquids → gases
  • gases → liquids → solids
  • gases → solids → liquids
  • liquids → solids → gases
What is one way that Earth based telescopes are limited.
  • they are more expensive to maintain then space telescopes
  • the atmosphere makes their images less clear
  • they are more likely to suffer damage that can't be fixed
  • they are very temperature sensitive
Which of the following lists the types of light in order from longest wavelength to shortest wavelength?
  • visible light, radio waves, infrared rays, x-rays
  • infrared rays, radio waves, visible light, x-rays
  • x-rays, infrared rays, radio waves, visible light
  • radio waves, infrared rays, visible light, x-rays
Which of the following correctly describes the relationship between wavelength and frequency?
  • as wavelength increases, frequency decreases
  • as wavelength decreases, frequency decreases
  • as wavelength increases, frequency increases
  • as wavelength decreases, frequency does not change
If someone is measuring how hot or cold the ground is using light, what part of the electromagnetic spectrum are they most likely using?
  • infrared radiation
  • gamma rays
  • radio waves
  • visible light
As the density of a medium decreases, a sound wave _____________.
  • increases speed
  • decreases speed
  • keeps speed constant
  • changes pitch
As the density of a medium decreases, a light wave _____________.
  • increases speed
  • decreases speed
  • keeps speed constant
  • changes pitch
Which of the following is true?
  • all light is invisible to humans except for visible light
  • some infrared and ultraviolet light are visible, along with visible light
  • humans can naturally see all parts of the EM spectrum
  • anything with a frequency equal to or lower than visible light is also visible
Which of the following is the main cause of a rainbow?
  • reflection
  • refraction
  • absorption
  • government experiments
The points labeled on the chart below represent the approximate size of Earth, the Milky Way, the Moon, and the Sun. The approximate size of the Solar System is also shown. Which point on the chart best represents the approximate size of the Sun?
  • W
  • X
  • Y
  • Z
To study something as vast as the universe and its structures, scientists often find it helpful to organize information in a simplified visual form. Which of the following represents structures of the universe in order from largest to smallest?
  • universe → galaxy → solar system → planet
  • solar system → universe → planet → galaxy
  • planet → galaxy → solar system → universe
  • planet → solar system → galaxy → universe
0 h : 0 m : 1 s

Answered Not Answered Not Visited Correct : 0 Incorrect : 0