7.3

Question 1

abiogenesis

Answer 1

formation of living organisms from inanimate material

Question 2

accretion

Answer 2

particles of dust and rock that slowly come together due to the gravity of a larger object

Question 3

amino acids

Answer 3

organic compounds that can be combines to produce proteins

Question 4

astrobiology

Answer 4

study of living organisms beyond Earth’s atmosphere

Question 5

Cyanobacteria

Answer 5

blue green bacteria. microscopic organisms that can store energy from sunlight using photosynthesis

Question 6

gas giant

Answer 6

large planet consisting of mainly gases eg: Jupiter

Question 7

Hydrocarbon

Answer 7

compound consisting primarily of hydrogen and carbon

Question 8

Moon

Answer 8

any naturally occurring satellite that orbits a planet

Question 9

organic compounds

Answer 9

consist primarily of chains of carbon and oxygen

Question 10

panspermia

Answer 10

theory that life came from mars or a comet/meteorite

Question 11

planet

Answer 11

a celestial body orbiting the sun, has sufficient mass for it’s self gravity to overcome rigid body forces so that it assumes a nearly round shape, and has cleared he neighborhood around it’s orbit

Question 12

proteins

Answer 12

chemical compunds that all living organisms have

Question 13

protoplanetary disk

Answer 13

disk of gas surrounding a prostar that will form into planets

Question 14

prostar

Answer 14

collapsing cloud of gas that will form into planets

Question 15

seismic waves

Answer 15

waves that carry energy from an earthquake around the Earth

Question 16

terrestrial planet

Answer 16

literally Earth-like planet, planet made of primarily rock and solid material.