DefinitionsA
Click for each heading
then for the answer
Want an “A”Here’s the place to
start.
Alloy
is a mixture of metals
e.g. bronze is a mixture of
copper and tin.
3
Alloys =4 to know
• Bronze = –Copper and Tin
•Brass = –Copper and Zinc
• Solder =–Lead and Tin
• Steel = –Iron and Carbon
Acid
•has pH less than 7
•turns blue litmus paper RED
•sour taste
Area
= length X widthcm2
L
W
Atom
smallest part of an element that has the properties of the element.
Atomic Number
The number of protons in an atom (of an element)
A.C.
Alternating Current
Electricity that changes direction
50 times a second (50 Hz)
Aerobic Respiration
Using oxygen
to release energy from food
in all cells
Acceleration
= change in velocity
time taken
Units = m/s2
Anther
makes pollen in a flower
(male part)
Antagonistic Muscles
pairs of muscles
that pull a bone
in opposite directions
e.g. biceps and triceps
Asexual Reproduction
Reproduction using just one parent producing identical offspring (young)
e.g. cuttings or runners in plants
Atmospheric Pressure
• The weight of the atmosphere (air) pressing down on earth.
• Gets smaller as you climb higher
• Measured by BAROMETER
• Do I know it??• Alloy• 4 examples of alloys• Acid• Area• Atom• Atomic Number
•A.C.•Aerobic Respiration•Acceleration•Anther•Antagonistic Muscles•Asexual Reproduction•Atmospheric Pressure