What percentage of the original parent isotope is daughter if 1 half life has elapsed?
- 50%
- 75%
- 87.5%
- 93.75%
- 100%
50%
Environmental & Atmospheric Sciences
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How many alpha particles are emitted in the series of radioactive decay events from a U-238 nucleus to a Pb-206 nucleus?
A. 8 B. 16 C. 32 D. 4
Environmental & Atmospheric Sciences
An earthquake measures 5.0 on the Richter scale. Therefore,
A. 10 times as much damage is done to buildings as there is in a magnitude 4.0 earthquake. B. the earthquake is 10 times deeper compared to a 6.0 earthquake. C. the ground shakes 10 times as much as it does during a magnitude 4.0 earthquake. D. 10 times as much energy is released as during a magnitude 4.0 earthquake.
Environmental & Atmospheric Sciences
Mountain glaciation leaves a series of V-shaped valleys
Indicate whether the statement is true or false.
Environmental & Atmospheric Sciences
How many water masses are common in tropical and temperate latitudes?
A) Three B) Four C) Five D) Six
Environmental & Atmospheric Sciences