The divisions of time in the Geologic Time Scale represent:

a) the Law of Superposition

b) the results of radiometric dating

c) major changes in biodiversity

d) multiples of 35 million years

e) all of the above

Which is more dangerous to living things, gamma rays or X-rays? Explain.

If you compare an electrical circuit to a system that carries water, what would the switch represent? A. the water pipes B. the handle on the faucet C. the size of the water pipes D. the pressure built up inside the pipes

How fast is a wave moving if it has a frequency of 35 Hz and there are 6 meters between crests?

When the mass of the cylinder increased from 3.0 kg to 6.0 kg, what happened to the amount of heat generated in the system?

A ball rolls forward in the grass slowing down as it rolls?

Which of these would you include ina free body diagram for a bicycle-plus-rider taken together as the bicycle is being pedaled up the hill?

What are two possible uses of genetic engineering

How many joules are expended by a 70 kg man climbing up 6m of stairway? How much work is done if the climbing takes place on the surface of the moon? (Assume that the acceleration due to gravity on the moon's surface is 1.6 m/s2

A baseball flying through the air has kinetic energy because of its motion. true or false?

How many poles does Jupiter's magnetosphere have? a. 2 c. 8 b. 4 d. 9