Introduction to Electrons

Multiple Choice

Look carefully at the picture. It shows an electron in the excited state on the left, and the electron returning to its ground state on the right. When the electron return to the ground state it emits a_______________________.

• blast of cold air

• electrostatic charge

• proton

• photon (light)

Multiple Choice

An atom that has gained energy beyond normal is said to be ...

• excited

• grounded

• naturalized

Multiple Choice

When an atom has all of its electrons in the lowest energy orbitals available, the atom is  

• in the ground state

• in an excited state

• giving off light energy
• unstable

Multiple Choice

The duality of matter, as it applies to the electron, means

• dually spinning electrons can occupy the same orbital.

• electrons spin in two directions.

• electrons have properties of both waves and particles.

• two electrons repel each other

Multiple Choice

Which color waves have the lowest frequency?

• red

• yellow

• green

• violet

Multiple Choice

Which color waves have the shortest wavelength?

• red

• yellow

• green

• violet

Multiple Choice

Which EM waves have the longest wavelength?

• radio

• x-rays

• ultraviolet

• gamma rays

Multiple Choice

Which EM waves are have the highest energy & are the most dangerous?

• radio

• gamma rays

• infrared

• x-rays

Multiple Choice

What does point C represent?

• trough

• frequency

• wavelength

• amplitude

Multiple Choice

What does point A represent?

• trough

• wavelength

• wave

• crest

Multiple Choice

Which term describes the number of times the crest of the wave passes a fixed point in a given amount of time?

• amplitude

• compression

• frequency

• wavelength

Multiple Choice

What does the distance D represent?

• amplitude

• wavelength

• medium

• compression

Multiple Choice

What does the distance B represent?

• wave

• wavelength

• amplitude

• medium

Multiple Choice

High frequency in EM waves equals

• high energy and short wavelength

• low energy and short wavelength

• high energy and long wavelength

• low energy and long wavelength

Multiple Choice

A wave with a large wavelength will have a ______ frequency and _____ energy

• high, low

• high, high

• low, high

• low, low

Multiple Choice

High frequency waves have _________ wavelength.

• varying
• high
• the same
• low