Scientists

Question 0

Observes moons of Jupiter, evidence promotes heliocentric model

Answer 0

Galileo

Question 1

Measured the earths circumference

Answer 1

Eratosthenes

Question 2

Observes cells, book “Micrographia”

Answer 2

Hooke

Question 3

Discovers microorganisms, father of micro biology

Answer 3

Leeuwenhoek

Question 4

Made first quantitative estimate of speed of light

Answer 4

Romer

Question 5

Discovers dephlogisticated air

Answer 5

Priestley

Question 6

Disproved phlogiston theory

Answer 6

Lavoisier

Question 7

Law of conservation of mass

Answer 7

Lavoisier

Question 8

First vaccine, smallpox

Answer 8

Jenner

Question 9

Uses a torsion bar to measure density of earth

Answer 9

Cavendish

Question 10

Discovered hydrogen

Answer 10

Cavendish

Question 11

Demonstrated wave-particle duality of light

Answer 11

Young

Question 12

Isolates K, Ca, Na, and others

Answer 12

Davy

Question 13

Discovers electromagnetisism

Answer 13

Orsted

Question 14

Synthesizes urea

Answer 14

Wöhler

Question 15

Law of effusion and diffusion

Answer 15

Graham

Question 16

Doppler effect

Answer 16

Christian Doppler

Question 17

Pendulum, Coriolis effect

Answer 17

Foucault

Question 18

Law of segregation, law of independent assortment

Answer 18

Mendel

Question 19

Spontaneous generation

Answer 19

Pasteur

Question 20

Voltage across a conductor

Answer 20

Hall, Hall effect

Question 21

Rabies vaccine

Answer 21

Pasteur

Question 22

Concept of activation energy

Answer 22

Arrhenius

Question 23

Isolate noble gases

Answer 23

William Ramsay and Lord Rayleigh

Question 24

Discover radioactivity

Answer 24

Henri Becquerel, Marie Curie, and Pierre Curie

Question 25

Discovers electron

Answer 25

Thomson

Question 26

Oil-Drop Experiment

Answer 26

Millikan

Question 27

Demonstrates super conductivity

Answer 27

Onnes

Question 28

Central atomic neucleus, gold foil experiment

Answer 28

Rutherford

Question 29

Transuranium elements, reorganizes periodic table to current form

Answer 29

Seaborg

Question 30

Penicillin

Answer 30

Fleming

Question 31

Jumping genes, breeds maize for color

Answer 31

McClintok

Question 32

Make first working transistor

Answer 32

John Bardeen, William Shockley, and Walter Brattain

Question 33

Use carbon-14 in photosynthesis

Answer 33

Calvin, benson

Question 34

detect the cosmic microwave background radiation

Answer 34

Arno Penzias and Robert Wilson