Science Bowl Vocabulary

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A

abdomen- the lower part of the trunk, which is separated from the chest by the diaphragm. Contained in the abdomen are the organs of digestion and excretion and, in women, the uterus and ovaries.

absolute magnitude- a measure of the luminosity of a celestial object. Absolute magnitude is taken to be the apparent magnitude an object would display if measured at a standard distance of 10 parsecs.

absolute zero- the lowest possible temperature. Absolute zero is zero kelvin, -273.15° Celsius or -459.67° Farenheit.

acceleration- a change in the speed of an object. A reduction in speed is a negative acceleration and is often called deceleration. Acceleration is usually mesaured in ms² (meters per seconds per second or meters per second squared)

accretion disk- a rotating disk-shaped mass in space, which is formed by gravitational attraction.

achromatic doublet-

acid-

activation energy-

additive process-

adhesive forces-

agar-

air resistance-

algae-

alkali-

alkane-

alkene-

alkyne-

allotrophes-

alloy-

alpha decay / alpha particle-

alternating current (AC)-

altitude-

amino acid-

amniocentesis-

amorphous solid-

amplitude-

anabolic reaction-

anaerobically-

anatomical-

angular momentum-

anhydrous-

anion-

anode-

antenna (1)-

antenna (2)-

anterior-

anther-

antibiotic-

antibody-

antigen-

antiparticle-

aphelion-

apparent magnitude-

aqueous solution-

articulated-

arthropod-

asexual reproduction-

astronomical unit-

atmosphere-

atmospheric pressure-

atom-

atomic force microscope-

atomic mass-

atomic number-

ATP-

autotroph-

axial tilt-

axis-

B

C

D

E

F

G

H

I

J

K

L

M

N

O

P

Q

R

S

T

U

V

W

X

Y

Z