Questions and CORRECT Answers
Which of these reduces friction - CORRECT ANSWER - ball bearings
When a lobster grows a claw to replace one that was lost, the process is called - CORRECT
ANSWER - regeneration
Any astronomical body that revolves around a larger body is called - CORRECT
ANSWER - satellite
In chemistry, to be classified as an organic substance, a substance must contain? - CORRECT
ANSWER - carbon atoms
Which element does NOT contain any neutrons - CORRECT ANSWER - Hydrogen
The chemical formula of a compound describes the elements the compound contains and the -
CORRECT ANSWER - the ratio of elements in a compound
What is the symbol for the hydroxyl ion - CORRECT ANSWER - OH-
The Tympanic membranes are also known as the - CORRECT ANSWER - Ear drum
Which of the following actions produce a chemical change - CORRECT ANSWER -
adding salt to the hot water
Choking is prevented by the - CORRECT ANSWER - Epiglottis
, A perpetual-motion machine can never be built because it is not possible to eliminate -
CORRECT ANSWER - elasticity
Which of the following is a renewable source - CORRECT ANSWER -
When scientist measures a liquid's resistance to flow, they are measuring the liquids - CORRECT
ANSWER - Viscosity
Regeneration in man is limited to - CORRECT ANSWER - Healing of wounds
How many atoms are in a single molecule of water (H2O) - CORRECT ANSWER -2
atoms
A student bought a sandwich for 80 cents, milk for 20 cent and pie for 30 cents. How much did
the meal cost - CORRECT ANSWER - $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
ANSWER - 50%
Jerry walked a dog from 6:40 a.m. to 7:30 a.m. one day. If he was paid at the rate of $6 per hour,
how much did he earn that day? - CORRECT ANSWER - $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 feet is the new office? -
CORRECT ANSWER - 176 sq ft
If the perimeter of a square garden is 84 feet, what is the area of the garden - CORRECT
ANSWER - 441 sq ft