Clara is volunteering at NASA where scientists use telescopes to learn more about our universe. Scientists use tools that look at different types of electromagnetic radiation. The tools are used to form images of objects in space out of the radiation. Choose the word or phrase that completes each sentence.

The most familiar type of electromagnetic radiation is [Choose...] The wavelengths are separated into different colors called a [Choose...]​

it's diluted or concentrated

in a diluted solution, you can add a lot more solute but in concentrated only a little more can be added

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.