Which of these reduces friction?
Ball bearings
When a lobster grows a claw to replace one that was lost, the process is
... [Show More] called?
Regeneration
Astronomical body that revolves around a larger body
Satellite
In chemistry, to be classified as an organic substance, a substance must contain?
Carbon Atoms
Which element does not contain any neutrons?
Hydrogen
The chemical formula of a compound describes the elements...
Ratio of elements
What is the symbol for the hydroxyl ion?
OH-
The tympanic membranes are also known as
Ear drums
Which of the following actions produce a chemical change
Adding salt to the hot water
Choking is prevented by the...
Epiglottis covering the voice box
What do a hydrogen molecule and an oxygen molecule have in common?
The charge
Which of the following is a NON-renewable resource?
Copper
What are the two gases that make up stars?
Hydrogen and Helium
The term meiosis is usually associated with...
Reproduction
What enables this pen to work?
Capillary Action
A radar is designed to report the track of an aircraft every second. If this radar reports 30 tracks in one minute, what percentage of the time did the radar track the aircraft?
50%
Jerry walked a dog from 6:40am to 7:30pm one day. If he was paid at the rate of 6$ per hour, how much did he earn that day?
$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?
968 ft
How many feet of chain fence...
32 feet
A train goes twice as fast downhill...
1/2 hour
A restaurants rent is adjusted to the cost of living index...
1607.35
There are 9 red and 6 green marbles in a bag. A child reaches in the bag and randomly takes one marble. What is the probability pf that child getting a green marble?
.40
Shawn purchased a shirt for 22.05
$20.95
The pet store had 6 puppies selling for $104 each and 12 kittens selling for $24 each today, only two puppies and eight kittens were left in dollar terms what was the ratio of sales of puppies to kittens?
13 to 3
Jamie just bought two boxes. The first box is square, with each side measuring 10 units, and is 4 units high. The second box is rectangular and has twice the volume of the square box. If the height of the second box is 5 units, and the width is 10 units, what is the length of the second box?
16 units [Show Less]