Which type of rock is created when lava cools and hardens?

a. metamorphic

b. igneous

c. cement

d. sedimentary

As the wavelength of electromagnetic radiation increases. true or false

What are the 6 characteristics of life?

What best explains the speed of sound in different states of matter?

Most of the mass of the Milky Way exists in the form of A. dust. B. stars. C. dark matter. D. gas.

The manipulation of natural sounds via the medium of magnetic tape is called

What two equations can be used to determine the speed of a wave

Which force has an infinite range and is always attractive?

A ramp with a mechanical advantage of 8 lifts objects to a height of 1.5 meters how long is the ramp

Sodium, atomic number 11, forms an ionic bond with an atom of an unknown element. What is one possible choice for the ther element in the compound?

A ship leaves the island of Guam and sails a distance 255 km at an angle 49.0 o north of west. Part A: In which direction must it now head so that its resultant displacement will be 125 km directly east of Guam?