E = Mc2

In the equation E = mc² what does the E stand for?

• energy

• efficiency

• exertion

• endurance

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In the equation E = mc² what does the variable C represent?

• change

• compression

• speed of light

• speed of sound

What is an example of mass converting to energy?

• a car running on gasoline

• a battery powering a flashlight

• a person lifting a heavy object

• nuclear power plant generating electricity

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NGSS.HS-PS1-8

What is E = mc² also known as?

• Law of Conservation of Energy

• Coulomb's Law

• Mass-energy equivalence

• Zeroth's Law

The difference between the mass of the atom and the sum of the masses of its parts is called the _______.

• mass-defect

• electron affinity

• isotope

• fission paradox

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Light has both characteristics of a wave and a _____?

• magnet

• charge

• force

• particle

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Heinrich Hertz observed a property of light called the ________ effect. Under certain conditions, electromagnetic radiation causes materials to emit electrons. The electrons are emitted only if the frequency of the radiation is above a certain level.

• tetragrammic

• photoelectric

• threshold

• Hertz

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NGSS.HS-PS4-4

The emission spectrum of an element depends upon the configuration of its ______.

• protons

• neturons

• electrons

• atomic mass

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NGSS.HS-PS1-2