All solids above 1000 K begin to emit radiation in what range on the electromagnetic scale? radio
infrared
visible Light
ultraviolet

Anton created a chart listing different types of materials.which best complete the chart? (a)x: copper y: glass(b)x: rubber y: copper(c)x: paper y: silicon(d)x: silicon y: glass

Which is not a source of noise pollution? a)airplanes b)acid rain c)machines d)cars

What is the mass of the same rock on the earth