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WorksheetsUnit 10A-10B: Old ideas about atoms & light
Total questions: 11
Worksheet time: 6mins
Which old scientist came up with the conclusion that the atom is mostly empty space with a dense, positively charged nucleus at the center?
Dalton
Rutherford
Chadwick
Bohr
In Rutherford's experiment, he shot alpha particles through atoms. If there was NOT a dense positively charged center in atoms, then
Some of the alpha particles would be deflected back to him
The alpha particles would go straight through the atoms without being deflected
The alpha particles would stick to the nucleus
In the Bohr model, Niels Bohr found that
He could play around with hydrogen without blowing up :D
Atoms exist
Atoms have a dense, positively charged nucleus
Electrons can move up and down orbitals by gaining and losing energy
Radio waves
Are very high energy and WILL kill you
Are very high energy and WON'T kill you
Are very low energy and WILL kill you
Are very low energy and WON'T kill you
Which one of the following types of electromagnetic radiation are NOT dangerous because of their short wavelengths?
Visible light
X-Rays
Gamma rays
UV rays
If plants look green, that means
They are absorbing green light
They are absorbing most colors and emitting green light
They are photosynthesis
They are absorbing white light and emitting nothing
When each element GIVES OFF only certain frequencies of light, these are called
Pink Floyd the Dark Side of the Moon
Emission spectrums
Spectral lines
Absorption spectrum
When you energize neon gas, the light emitted looks orange or purple-ish because
Neon gas absorbs all other wavelengths of light and emits orange and purple
Neon gas emits all other wavelengths of light and emits orange and purple
Neon gas can only absorb the colors orange and purple
Neon gas is stylin
When light shines through and atom, a(n) _____ energizes the electrons to higher energy level
Proton
Photon
Electron
Nucleus
For hydrogen, when an electron absorbs a photon's energy, it emits photons of the colors (3 correct answers)
Blue
Red
Orange
Violet
Green
Microwaves have grills covering the little windows because
Microwaves are too large to squeeze through & energize your body's atoms
Microwaves are just the right size to squeeze through and energize your body's atoms
Microwaves need to be able to move through the microwave door
