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WorksheetsGED Science Test
Total questions: 25
Worksheet time: 2hrs 5mins
Velocity equals displacement/time. What is the velocity of a person who took the curviest roads possible to travel all the way west to Los Angeles (2000 miles) and it took them 72 hours to get there?
(velocity= displacement/time)
27.8 miles/ hour
55 miles/ hour
144000 miles/ hour
.036 miles/ hour
A chemist has a sample of hot gas and measures the amount of heat being released as it cools. The flat parts of the graph represent state changes. Which state(s) of matter are found at 117°C?
solid and liquid
liquid and gas
liquid only
gas only
Using Newton's second law, what would be the force of an orange with a mass of 150 grams and acceleration due to gravity of approximately 10 m/s2? (Remember, Newton's second law is Force = mass × acceleration)
1.5N
15N
150N
1500N
Population Growth
In ecology, a population is defined as a group of organisms of the same species living together in a particular geographic area. Populations grow as new individuals are added. Under ideal conditions, where organisms have unlimited space and resources, populations will continually increase. The growth rate of a population under these conditions is described by the equation G=Rn where GG represents the growth rate of the population, rr represents the per capita rate of increase, and N represents the number of individuals in the population.
Escherichia coli (E.coli) is a bacterial species that is commonly grown in research laboratories. E.coli reproduce by a process called binary fission, where a single bacterial cell divides in two. The two resulting daughter cells are identical to one another and identical to the original parent cell. Under ideal conditions, E.coli will divide every 20 minutes.
But in nature, there are limitations on the growth rates of populations. A number of environmental factors limit population size, such as disease, predators, and drought, and availability of food and suitable habitat. The maximum number of individuals that an ecosystem can support is called the carrying capacity, represented by letter K. The value of K varies, depending on the species and the resources available in a particular ecosystem. The size of a population will generally stabilize once it reaches carrying capacity.
Which of the following graphs best represents a population that has reached carrying capacity?
Chemical X has a mass of 20 grams, and chemical Y has a mass of 30 grams. If the two chemicals are mixed and a complete chemical reaction takes place, what is most likely the mass of the product?
20 grams
30 grams
50 grams
100 grams
Tides are the twice-daily rise and fall of water along the shores of the oceans. Tides aew caused mainly by the gravitational pull of the moon, and secondarily by the gravitational pull of the sun. The highest tides, called spring tides, occur when the sun, moon, and Earth are in line. Other high tides, called neap tides, occur when the sun and moon are at right angles with respect to the sun.
Which of the following statements is supported by the information above?
The moon and the sun exert the greatest pull on Earth's oceans when these bodies are all in a line.
When the moon is at right angles to the sun with respect to the the Earth, tides do not occur along the
Spring tides occur only in the spring, and neap tides occur only in the fall.
Neap tides are generally higher than spring tides.
Lin cooked a pot of soup, then put half the soup in the freezer for a while. Now the soup in the pot is hot, and the soup in the freezer is cold. What is the difference between the molecules of the soup in the pot and the molecules of the soup in the freezer?
The molecules of the soup in the pot are moving and the molecules of the soup in the freezer are not moving.
The molecules of the soup in the pot are moving faster than the molecules of the soup in the freezer.
There is no difference because all of the soup is made of the same type of molecules.
The molecules of the soup in the freezer are smaller than the molecules of the soup in the pot.
A student lists resources that can be used to produce electricity. Which of the resources are renewable resources that can be used to produce electricity?
Wind, water power
Wind, coal, and natural gas
Coal, water power, and petroleum
Coal, natural gas, water power, and petroleum
Which conclusion is supported by the data in the graph?
Solubility always increases as temperature increases.
At 40°C, KCl has the highest solubility of the salts in the table
The rate of change in the solubility of KNO3 changes as temperature increases.
. The solubility of NaCl does not increase with increasing temperatures above 80°C.
A temperature change occurs when ammonium chloride is dissolved in a water solution. The table shows the temperature change over a period of 120 seconds.
What is the appropriate temperature of the solution in degrees Fahrenheit at 60 seconds? You may use the calculator
-24 °F
-7 °F
42 °F
66 °F
A scientist was investigating if differences in the frictional work performed on a model car can change depending on its mass (in grams) and whether the car moves up or down an inclined plane. They decided to measure the amount of frictional force experienced by the model car and the distance it traveled in meters. The scientists were able to evaluate the frictional work using the following data.
It is known that the relationship between force and distance determines the work done by friction (W ).
W = Fd
W = work done by friction F = force d = distance
How much work done by friction was exerted on the car as it moved down the inclined plane?
9.005
11.46
16.16
10.15
Which of the following did Harvey do?
I. Observe the heartbeat and blood flow in snakes and frogs.
II. Determine that the heart acts as a pump.
III. Count the number of blood cells that pass through the heart every hour.
IV. Show that the blood circulates.
He did only I.
He did I and II.
He did I, II, and IV.
He did I, III, and IV.
He did II, III, and IV.
Which statement accurately summarizes the passage?
Micrometeorite analysis proves that 2.7 billion years ago, there was no oxygen in the lower atmosphere or the upper atmosphere.
Micrometeorite analysis proves that 2.7 billion years ago, there was oxygen in the lower atmosphere but not in the upper atmosphere.
Micrometeorite analysis proves that 2.7 billion years ago, there was oxygen in the upper atmosphere but not in the lower atmosphere.
Micrometeorite analysis proves that 2.7 billion years ago, there was oxygen in both the lower atmosphere and the upper atmosphere.
According to the chart, which city experienced the largest increase from its previous record to its current record?
Hobart
Penrith
Eucla
Leonara
Which of the following cities had previous record equal to the median of all the cities' previous records?
Cape Naturaliste
Canberra
Penrith
Eucla
Chloroplasts are structures found within some of the cells in a leaf. They help in the process of photosynthesis. In the diagram, they are represented by small gray spots on the cells. Which of the following statements is supported by the information in the diagram?
Palisade cells provide a means of transporting water through a plant.
Most of a leaf's chloroplasts are found in its palisade cells.
The spongy cells are soft, like a sponge.
The epidermis blocks light from reaching the palisade cells.
The forelimbs of frogs are homologous to those of human arms, penguins' flippers, birds' wings, and alligators' legs. Based on the diagram and paragraph, which of the following is likely to be true of frogs' forelimbs?
Frogs use their forelimbs for swimming
Frogs' forelimbs contain carpal bones
Frogs' forelimbs resemble wings more than they resemble human arms
Frogs are more closely related to humans than they are to alligators
In most cases, changes in one aspect of an ecosystem result in reactions in other parts of the ecosystem, restoring balance. In some cases, however, changes can be so great that the original ecosystem is replaced with another. When this occurs naturally, as when grasses are replaced by taller plants, shrubs, and eventually trees, it is called succession. Which of the following statements is supported by this information?
When changes are introduced into an ecosystem, its balance is permanently disrupted.
Succession is usually cased by human destruction of an ecosystem.
The intentional replacement of a wooded area by a field of cultivated wheat is an example of succession.
The natural replacement of lichens by mosses and ferns, and then shrubs, is an example of succession.
According to the graph, about what percentage of the universe may consist of matter that does not interact with light?
less than 0.01 percent
0.5 percent
4 percent
26 percent
