Which data from ocean rocks showed seafloor spreading and convinced scientists the theory of plate tectonics was valid? A.

density studies

B.

paleomagnetism

C.

ocean salinity studies

D.

seamount origins

Describe the properties of a wave. Include how longitudinal and transverse waves are alike and how they are different. Provide an example for each.

An object has an emissivity of 0.725. At temperature T, it radicates heat at a rate of 10 W. What is its rate of heat radiation at temperature 2 T

How would the composition of an atom change if both the atomic number and mass number each increase by one? A) The atom would have 1 more neutron. B) The atom would have one more proton and electron.

How many newtons of force are presented by the following amount:3 kg * m/sec squared? Select the correct answer a) 6 newtons b) 3 newtons c) 1 newton

You are driving west in your car on a clear, warm day. Up ahead, you see a dark band of ominous clouds. Soon, you drive beneath the towering bank of clouds, and things get very dark. For twenty minutes, you are pelted with rain and even some hail.

Change in speed over a given period of time is

A car takes 15 minutes to travel along a road that is 20 km long. What is the average speed of the car? A. 75 km/h B. 5.0 km/h C. 80 km/h D. 300 km/h

A 4.2 cm diameter circular loop of wire is in a 1.14 T magnetic field. The loop is removed from the field in 0.18 s. Assume that the loop is perpendicular to the magnetic field. What is the average induced emf?

When an ocean plate converges with another plate, what is created on the seafloor at the line of convergence?

Calculate the angle of refraction of 30.0° light shines from water into ice. The indices of refraction for water and ice are 1.36 and 1.31, respectively. A) 19.8° B) 31.3° C) 40.9° D) 64.0°