Holes drilled several kilometers into Earth's crust provide direct evidence about Earth's interior in the form of

a.

seismic waves.

b.

rock samples.

c.

liquid iron.

d.

volcanic eruption.

Conserving energy makes which type of energy last longer?

Which statement best describes how work and power are different

a book with the mass of 1 kg is sliding to the left on a table. if the frictional force on the book is 5 N, calculate the books acceleration. is it speeding up or slowing down

How has the model of our solar system changed over time?

This is a drawing showing the direction and magnitude of all forces acting on a body

Through which type of material does sound tend to travel at the highest speed? A. Sound travels at the same speed in every material B. Solids D. Liquids

How does a low pressure system determine the weather in an area?

Molecules at room temperature move freely. What happens to the molecules when heat is removed until it freezes? Molecules group together Molecules slow down and contract Molecules speed up and expand Molecules move freely

A spring is used in a lab. It is vibrated at different frequencies and the wavelength is recorded. Using the graph of the data, what is the relationship found between frequency and wavelength? A) Frequency and wavelength are inversely related.

How do you describe the frequency of waves perceived by the observer from the moment the source appears to the moment it disappears?