science help?

Question

Could someone please help me with these science problems??
thanks so much..

1. Scientists have used a combination of relative dating and absolute dating techniques to create the__________, the "map" of past eras of earth's history. ???

2. When an earthquake occurs, seismologists note two locations, the focus and the epicenter. The __________is the actual point of earth movement underground. ??

3. When an earthquake occurs, seismologists note two locations, the focus and the epicenter. The __________is the point on the surface directly above the earth movement.

4.Following an earth movement, an earthquake, seismic waves begin to move out from the point of the movement. The type of wave that travels out in all directions from the point of movement is the __________. ??
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Answer 1

Geologic time scale
Focus
Epicenter (aka hypocenter)
Primary and Secondary Waves (Seismic, but not so much)

Hope this helps!

Answer 2

1) Geologic time scale

2) focus

3) epicenter

4) body wave (P or S) ........Double check this one....the question seems kind of vague.