The ________ magnitude is determined from the amplitude of waves recorded on seismograms
Fill in the blank(s) with correct word
Richter
Environmental & Atmospheric Sciences
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Direct proof of continental drift was made possible with measurements of _____ with _____.
A ) altitude, lasers B ) location, sextants and chronographs C ) location, global positioning systems [GPS] D ) altitude, global positioning systems [GPS]
Environmental & Atmospheric Sciences
With which part of the atom is radioactivity associated?
A) the core electrons B) the entire atom C) the nucleus D) the valence electrons
Environmental & Atmospheric Sciences
The Mughals originated in what is today:
A) Iran B) Bangladesh C) Tibet D) Mongolia E) China
Environmental & Atmospheric Sciences
If a neutral element has the following chemical symbol, how many electrons does it have? 
U
A. 82 B. 143 C. 92 D. 235 E. none of the above
Environmental & Atmospheric Sciences