1. astronaut 2. biosphere
3. desalination
The process where light shining on
a metal surface causes electrons to be
emitted from the surface.
The splitting of an atomic nucleus
resulting in the release of large amounts
of energy
The process of removing salts and
other chemicals from sea water
A person who travels beyond the
earth's atmosphere.
The volume of air, water, and soil
surrounding the earth within which
conditions support life.
The union of atomic nuclei to form
heavier nuclei, resulting in the release of
enormous quantities of energy.
The packet of electromagnetic
4. fission
5. fusion
6. photon
7. photoelectric effect
energy