1. a diagram that shows the sun at the center of the solar system is known as a? a) geocentric model. b) heliocentric model. c) universe model. d) earth moon sun model. 2. why do the planets not travel in a straight path? . a) the forces of inertia and gravity cause them to move in a elliptical orbit around the earth. b) the forces of inertia cause the planets to move in curved paths around the sun. c) the forces of inertia cause the planets to move in curved paths around the sun. d) the forces of gravity and inertia combine to produced elliptical orbits around the sun. e) all of above.

What are similarities and differences of reflection, refraction, diffraction and absorption?

Pl asaaap ! match the term to the correct description. a type of wave that transfers energy where the particles in the medium move perpendicular to the direction in which the energy is traveling. a type of wave that transfers energy where the particles in the medium move parallel to the direction in which the energy is traveling. movement that is back and forth, like an equal sign = a type of wave that transfers energy where the particles in the medium move in a circle motion while the energy travels left or right. movement that is like a t transfers energy from one location to another 1. wave 2. parallel movement 3. perpendicular movement 4. transverse wave 5. longitudinal wave 6. surface wave

In science and physics what is the standard unit of measure for speed?