Which of these reduces friction correct answers ball
bearings
When a lobster grows a claw to replace one that was lost, the process is
called correct
answers
regeneration
Any astronomical body that revolves around a larger body is called
correct answers
satellit
e
In chemistry, to be classified as an organic substance, a substance
must contain?
correct answers carbon
atoms
Which element does NOT contain any neutrons correct answers
Hydrogen
The chemical formula of a compound describes the elements the
compound
and contains
the correct answers the ratio of elements in a
compound
What is the symbol for the hydroxyl ion correct
answers OH-
The Tympanic membranes are also known as the correct answers
Ear drum
Which of the following actions produce a chemical change correct answers
adding
to the hotsalt
water
Choking is prevented by the correct answers
Epiglottis
A perpetual-motion machine can never be built because it is not possible
to eliminate
correct answers
elasticity
Which of the following is a renewable source correct
answers
When scientist measures a liquid's resistance to flow, they are measuring
the liquids
correct answers
Viscosity
Regeneration in man is limited to correct answers Healing of
wounds
How many atoms are in a single molecule of water (H2O) correct
answers 2 atoms
A student bought a sandwich for 80 cents, milk for 20 cent and pie for 30
cents. did
much How the meal cost correct answers
$1.30
, A radar is designed to report the track is an aircraft every semiconductor.
If the radar
reports 30 tracks in one minute, what percentage of time did the radar track
the aircraft?
correct answers
50%
Jerry walked a dog from 6:40 a.m. to 7:30 a.m. one day. If he was paid at the
ratehour,
per of $6how much did he earn that day? correct
answers $5.00
A woman is looking for a bigger square office. She finds an office twice the
area of her
current office. If the perimeter of her current office is 88 feet, how many
square
the newfeet is correct answers 176
office?
sq ft
If the perimeter of a square garden is 84 feet, what is the area of the
garden correct
answers 441 sq
ft
How many feet of chain fence are necessary to enclose a dog pen that is
square
has and of 64 square feet correct
an area
answers 32
The pet store had 6 puppies selling for $104 each and 12 kittens selling for
$24 each.
Today, only 2 puppies and 8 kittens were left. In dollar terms, what was
the ratio
sales of
of puppies versus kittens? correct
answers 13:3
Before being painted, a concrete play area was marked off into squares
and then into
triangles. For the square shown, what is the area of the triangular part
labeled answers
correct XYZ? 32
sq ft
Five people, each working 8 hours a day can assemble 400 toys in a 5 day
work week.
what is the average number of toys assembled per hour per person?
correct
16 (used answers
choices to determine that 5*16= 80, and 80 toys per day for 5
days= 400)
If a 5-foot post casts an 8-foot shadow at the same time that a nearby tree
castsshadow,
foot a 48- how tall is the tree? correct answers
30 feet
If 35 of the 140 cars delivered to a dealer were blue, what percent of
the cars
blue? were answers
correct
25%
A box of nails weigh 1-5/6 pounds. What is the weight of 12 boxes? correct
answers 22
If the population of a certain city increased 25% in two years, the new
population
what percentwasof the old? correct answers
125%
The price of salmon correct answers
$3.60
In making permanent electronic connections use correct answers
soldering iron
Silicon chips are used primarily in correct answers
integrated circuits