Ged Science Practice Test 4 online test quiz prep
This test is prepared for the Science 4 lesson of the ged exam. In this Science Practice Test 4 online test belonging to the Science 4 lesson, a total of 20 questions were asked. Science Practice Test 4 online test, which was added for the first time in 2020-09-10 06:00:02, was updated in 2020-09-10 06:00:02. 1 people voted for the physics 1 test and received an average of 5. Ged practice test 2020
Which of the following energy sources causes the least pollution to the environment?
It is generally known that a compass needle will point north. It does not point to the geographical North Pole, but to the magnetic north pole. The Chinese tell stories of their seagoing ancestors whose compasses pointed south. For a long time, no one believed these stories. Then scientists discovered that periodically the magnetic poles of Earth reverse themselves.
What assumption made scientists unwilling to believe the stories about the ancient Chinese sailors?
Compasses are a very old invention.
Magnets have two poles: a north pole and a south pole.
Local iron deposits in the earth can affect the direction in which the compass needle points.
Earth's magnetic poles cannot change.
Compasses always line up with Earth's north and south poles.
Homeostasis is a state of equilibrium. Every living thing tries to achieve homeostasis by regulating its processes.
To achieve homeostasis, a cell that has taken in food would also need to do which of the following?
use less energy
take in still more food
stop all other functions
release waste materials
divide into two cells
Camels, like all animals, need water to live. Yet they are able to go up to ten days without eating or drinking. Many people believe that camels store water in their humps, but others disagree.
Which of the following statements would help prove that water is NOT stored in a camel's hump?
The hump becomes smaller when there is nothing to eat or drink.
The hump gets smaller when there is no food but water is available.
A camel can live for months on green grass and no water.
A camel's hump may contain up to fifty pounds of fat.
The hump becomes larger when the camel eats and drinks.
The probable reason that the scientists used only mice from the same pure-bred strain is so that
the mice would all be the same size
the mice would all be the same color
the experiment could be repeated with the same mice
genetic differences would not affect the outcome of the test
the experiment wouldn't cost as much
A finding is a proven result obtained as part of an experiment.
Which of the following could be considered a valid finding?
Mice remember better if they are fed immediately after each training session.
Mice remember better if they are fed and then allowed some time to think about the training.
Experiments with mice have nothing to do with human learning processes.
Mice used in experiments have to be from the same purebred strain.
Mice do not need to be fed in order to learn.
The use of an electric shock in the teaching process is
necessary to keep the mice alert
cruel and should not be allowed
a way to show the mice that they have taken a wrong turn in the maze
designed to elicit a predetermined response
part of the variable
It was noted that the mice could learn to run the maze more readily if it was well illuminated.
This information is
not relevant to their experiment
vital to the experiment
an assumption made by someone who observed the experiment
a result of the experiment
an important finding
Scientists measure the acidity of an object using the pH scale. The scale ranges from 0 to 14, with a pH of 7 being considered neutral. A pH less than 7 is acidic and one more than 7 is basic or alkaline. Normal rain has a pH of about 5.6. It is not neutral because rainwater naturally dissolves a small amount of carbon dioxide from the air and becomes slightly acidic.
Acid rain becomes a serious problem when the pH of the precipitation becomes less than 3.5. There have been reported pH of 1.3 in some areas. These extremely acidic conditions kill fish and plants, and may render lakes and soil totally uninhabitable. Young fish not only are killed by such acidic waters, but any fish that may survive are usually not able to reproduce. Sometimes, nature provides a means of neutralizing these acidic waters via naturally alkaline ammonia compounds or calcium compounds such as limestone,
The list below gives the pH of some common substances:
1.1: Battery acid
2.8: Household vinegar
5.5: Normal rainwater
7.0: Distilled water
8.2: Baking soda
11.6: Household ammonia
Which of the following mineral formations would be most effective at neutralizing acid rain?
Which of the following is not a cause of acid precipitation?
burning of coal
burning of natural gas
According to the passage, which of the following is the most basic?
Which pair of substances would likely neutralize each other?
lye and ammonia
vinegar and battery acid
vinegar and ammonia
ammonia and calcium carbonate
distilled water and rainwater
Which of the following responses to an acid rain-caused fish kill would have the best chance of preventing the problem from reappearing?
restocking the lake with heartier fish
allowing the stronger fish to survive and then reproduce
seeding clouds so that the rain falls elsewhere
reducing the amount of air pollution created
adding large amounts of ammonia to the lake to neutralize the acid
Which of the following compounds does not dissolve in water and cause acid rain?
Chemical fertilizers stimulate plant growth; but if the concentration is too high, they may damage roots.
What precautions concerning chemical fertilizers must a gardener take?
Use them only on some of his or her plants
Use only the amount recommended.
Do not apply chemical fertilizers.
Apply as much as possible without damaging roots.
Give the plants only tiny amounts.
Amniote vertebrates are generally classified into three orders: Reptilia, Ayes (birds), and Mammalia.
Of the following, which group of three animals contains one member of each order?
ostrich, American robin, Norway rat
Beluga whale, black-footed ferret, box turtle
timber rattlesnake, fence lizard, leopard
African lion, sea otter, herring gull
house sparrow, garter snake, African elephant
Aves: house sparrow:
Mammalia: African elephant.
Electrolytes include most acids, bases, and salts. Some conductors include hydrogen and sodium chloride, copper sulfate, and potassium nitrate. Substances that are not electrolytes include distilled water, sugar water, and most organic compounds.
Which of the following is a nonelectrolyte?
HNO3 (nitric acid)
HCl (hydrochloric acid)
H2SO4 (sulfuric acid)
C3H8 (propane gas)
NaCl (table salt)
Which of the following compounds in the liquid phase can be considered an electrolyte?
H2O (distilled water)
CO2 (carbon dioxide)
NaCl (sodium chloride)
CuO (oxidized copper)
H2O2 (hydrogen peroxide)
An object accelerates (changes its speed) only if the forces acting on it in one direction are greater than the forces in the opposite direction, All of the following objects will accelerate EXCEPT
a gas balloon in which the buoyant force is greater than its weight and air resistance
a man in a parachute when the air resistance is less than his weight
an airplane in horizontal flight when the thrust of the engine is equal to the drag of the air
a ball striking a wall, in which the force of the ball on the wall is equal to the force of the wall on the ball
a rocket fired straight up, when the engine thrust is equal to the air resistance
If the air at 75 degrees's holding the maximum amount of moisture that it can, and the temperature suddenly drops to 60 degrees, what is likely to be the result?
The humidity will remain unchanged.
The relative humidity will decrease.
Precipitation will be released in the form of rain.
Precipitation will be released in the form of hail.
Precipitation will be released in the form of snow.