By what factor is the light gathering ability of a 16 inch aperture (diameter) telescope greater than that of a 4 inch aperture (diameter) telescope?

Which best term to describe a chemical reaction that absorbs energy from its surroundings? a.thermal conductor b.thermal insulator c.endothermic d.exothermic

which statements describe the image? check all that apply.the wood is releasing argon gas.this information is useful for dating ancient rock.the process works only with organic matter.the element has a half-life of 5,730 years.this shows the half-life of carbon-19.

What instrument is used to measure liquid volume?