18. What does a prism show about colors of light? (1 point)
Green light is refracted the most in a prism.
Prisms create the different colors of light that we see.
All colors are refracted the same amount when they enter a prism.
White light contains many frequencies of visible light that prisms split into colors.
19. A light wave travels at an angle from Medium A into Medium B and Medium A has a greater index of refraction than Medium B. How do the angles of reflection and refraction where the media meet compare to the angle of incidence of the light wave? Choose the correct phrases to complete the statement.
The angle of reflection is ____________ the angle of incidence and the angle of refraction is ____________ the angle of incidence. (1 point)
larger than, larger than
equal to, larger than
larger than, smaller than
equal to, smaller than
20. Which of the following was an important discovery that Marie Curie made while studying radioactivity? (1 point)
Large atoms gain mass through radioactivity.
Atoms can change into different atoms with new properties.
All radioactive elements give off the same amount of energy.
The number of protons and neutrons in an atom never changes.