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A ship leaks a large amount of oil near a coastal area. Which statement describes how the oil most likely will affect the coastal habitat? | [
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Students want to plant a lemon tree at their school, but the cold winter temperatures in Massachusetts would kill the tree. Which of the following is the best solution to this problem? | [
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The visible colors listed from shortest to longest wavelength are violet, blue, green, yellow, orange, and red. Which of the following accurately compares the frequency of these colors using this information? | [
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Which statement best compares single-celled and multi-celled organisms? | [
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The mixing of cold Arctic Ocean water with warm surface Atlantic currents off the northwestern coast of Europe causes which effect? | [
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Which part of an atom occupies the majority of the volume? | [
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Students are performing an investigation to determine the types of bacteria that grow inside their school. Which activity should the students avoid while performing this investigation? | [
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Sonar equipment sends waves into deep water and measures the | [
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A type of bird in Africa eats blood-sucking insects off large mammals. Which word best describes the relationship between the bird and the mammals? | [
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A scientist cross-pollinates a tomato plant that is resistant to viruses with a tomato plant that produces large tomatoes. This is an example of | [
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Which factor best explains how many diseases, such as cancer, are formed within the body? | [
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What is the relationship between a community and a population? | [
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A bowling ball with a mass of 8.0 kg rolls down a bowling lane at 2.0 m/s. What is the momentum of the bowling ball? | [
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In a comparison of metals to nonmetals, metals tend to have | [
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Which of the following is a function of the motor neurons in the nervous system? | [
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Why is it safer to look at the Moon than it is to look at the Sun? | [
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In a recycling program, which materials can be reused many times? | [
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Which of these indicates a physical change that occurs during the process of digestion? | [
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The kinetic energies of particles in a sample of matter are increasing. This sample is most likely | [
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Doctors have determined that each of these factors could cause heart disease in humans except | [
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The Milky Way is a part of 30 or more galaxies called the Local Group. Which would be the most likely reason these galaxies are considered to be part of the Local Group? | [
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Which factor will prompt an animal's fight-or-flight response? | [
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After observing several dogs running, students ask the following question: Do dogs with long hair run faster than dogs with short hair? How can the students best answer their question? | [
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Which is a characteristic of a sperm cell but not of an egg cell? | [
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A large, solid spherical body in the solar system is classified as a moon. Which characteristic of the body gives it this classification? | [
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Some power plants release heated water into rivers. This practice adds thermal energy to the river that most likely | [
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Which diagram best shows how energy flows through a simple food chain? | [
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Two balls rolled down two identical inclined planes. The balls were exactly the same mass and size, but one ball rolled down the inclined plane faster. Identify a possible reason that one ball rolled faster than the other ball. | [
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Which of the following is an example of a physical change? | [
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Which pair of elements has the most similar properties? | [
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The alkaline earth metal elements are in the same family in the periodic table because they all have | [
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Which is a major function of the vacuoles found in cells? | [
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A student uses a pH meter to measure the acidity of a water sample from a lake. For what purpose is the student most likely testing the water? | [
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Read the description of the experiment below to answer the question. One hundred pea seeds were put in petri dishes and covered with wet paper towels. The petri dishes were then put inside black plastic bags. Half of them were placed in an incubator set to 10°C. The remaining half were placed in an incubator set to 30°C. This experiment was most likely designed to study the effect of which variable on the germination of pea seeds? | [
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In order to produce light, the atoms inside a light bulb transform electrical energy into | [
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A rabbit population has increased noticeably in the past ten years. Which of the following is a reasonable hypothesis for this population growth? | [
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Members of a planning team build a model of a nearby stream and then block the stream to show how it can form a lake. Which is a limitation of the model? | [
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When a finger is cut and bleeds, platelets and plasma proteins move to the cut to stop the bleeding. As these move to the cut, this stimulates more platelets and proteins to move to the cut to stop the bleeding. What type of mechanism is being illustrated? | [
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What characteristic of DNA results in cell differentiation in developing embryos? | [
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A certain species of endangered parrots lives on an island that can be seriously affected by large floods. Which of these is considered a negative impact to the parrot population from flooding? | [
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A botanist developed a new fertilizer that was tested on different types of plants under different conditions. The results indicated that the fertilizer increased plant growth. Which would be the best way to validate the results? | [
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Hatchling sea turtles are typically dark in color. Occasionally, a sea turtle hatches that is almost white in color. When crawling from the nest on the beach to the ocean, this light-colored sea turtle could be at risk for sunburn. The light color of the turtles would most likely | [
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Which event occurs every day? | [
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Many people throw away almost five pounds of trash each day. How could everyone decrease the amount of trash thrown away daily? | [
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How many times does Earth rotate on its axis in one day? | [
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A student is given three identically sized blocks. Each block is made of a different material. What characteristic of the blocks should be examined to find out which block is made of metal? | [
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Which of the following statements best explains why the tilt of Earth on its axis causes summer to be warmer than winter in the Northern Hemisphere? | [
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Plant and animal life cycles are alike because they both | [
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A research scientist repeatedly observes a bird avoiding a specific butterfly species even though it eats other types of butterflies. Which statement most likely explains the behavior of the bird? | [
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Which is the best evidence that rocks found deep underground were once exposed at the surface? | [
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When placed in direct sunlight, which object will absorb the most visible light energy? | [
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Genes are unable to determine a person's | [
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The chemical symbol for niobium is Nb. Based on its symbol, what can be concluded about niobium? | [
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Which simple machine increases the distance over which a load travels and reduces the needed force? | [
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Water freezing is an example of a | [
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If enough heat is taken away from a container of water, what will happen to the water? | [
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The gravitational force exerted by an object depends on its | [
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Which of the following is an example of the formation of a mixture? | [
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If a child scrapes his foot on a piece of rusty metal, it is important to get medical treatment because the | [
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Tigers and household cats are members of the same family; however, their sizes are vastly different. What is the cause of this difference? | [
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Andy lives in the southern hemisphere. What season does he most likely experience in August? | [
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Which type of force requires contact between two objects for one to push or pull the other? | [
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Which sequence of energy transformations occurs after a battery-operated flashlight is turned on? | [
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In a tug-of-war game, balanced forces are best represented when both teams cause the flag to | [
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A child rides a wagon down a hill. Eventually, the wagon comes to a stop. Which is most responsible for causing the wagon to stop? | [
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When two unequal forces act in opposite directions on a moving object, the object will | [
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The equation for the synthesis of water is given below. 2H_{2} + O_{2} -> 2H_{2}O How many grams of oxygen gas are needed to produce 36.0 grams of water? | [
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Which of these has the greatest capacity for storing thermal energy from the Sun? | [
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Carbon dioxide emissions have increased due to large numbers of automobiles and increased industrialization. Which of the following has been most affected by the increase in carbon dioxide levels? | [
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Screech owls have two color variations-red and grey. What advantage does the grey screech owl have over the red screech owl in a habitat that is made up of trees with dark-colored bark? | [
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Which process in plants is most similar to sexual reproduction in vertebrates? | [
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In the rock cycle, weathering and erosion begin the process of the formation of | [
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The building of a dam will most likely | [
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Geologists frequently use mass spectrometers in determining the relative age of rocks. A spectrometer can differentiate between the ratios of isotopes in rock samples and calculates the radioactive decay involving what two isotopes? | [
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Which activity is an example of a good health habit? | [
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Which statement best describes a liquid sample? | [
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Which of these methods of energy resource acquisition has the least effect on the lithosphere? | [
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A certain animal has specialized cells that can cause it to change color rapidly. This color change will most likely help the animal | [
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Scientists conduct investigations to answer questions. Before making a valid conclusion, scientists must | [
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In an investigation, which of these procedures is most important in reaching a conclusion? | [
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A teacher opens a can of food in the front of a classroom. Soon, all of the students in the classroom can smell the food. Which statement identifies a property of a gas that allows all of the students to smell the food? | [
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Which substance should a student apply to the skin if he or she gets splashed with an acid? | [
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... |
Students measure the effect of water on the growth of plants for a lab experiment. The students give different amounts of water to three different groups of plants. All plants receive the same amount of light and are planted in the same amount of soil. The students then measure the height of the plants over a period of four weeks. Which variables should be labeled on the axes to graph the data collected in this experiment? | [
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A person catches and measures a large fish called a halibut. She thinks that this halibut is above average in size. To help support her thinking, it would be most helpful to measure | [
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Which characteristic do single-celled organisms and multicellular organisms have in common? | [
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0.0254729... |
In the summer, the Arctic fox's fur is dark gray or brown. In the winter, its fur is white. The changes in color enable the fox to | [
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... |
Which of the following human traits is least likely to be inherited? | [
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Which characteristic would be most important for a plant to have to become a pioneer plant on a recovering beach? | [
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Corn is widely being used in the United States to make ethanol for use in automobile fuel. How might the overproduction of corn negatively affect the environment? | [
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A student pushes against a tree with a force of 10 newtons (N). The tree does not move. What is the amount of force exerted by the tree on the student? | [
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Base your answers on the information below. One hot, summer day it rained very heavily. After the rain, a plastic pan on a picnic table had 2 cm of rainwater in it. Four hours later, all the rainwater in the pan was gone. If the day were cool instead of hot, the rainwater in the pan would have disappeared | [
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Materials combine chemically or physically. Which materials form a new substance when chemically combined? | [
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Which form of water is most likely to appear when the temperature is below freezing? | [
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Scientists claim that the continents of South America and Africa were once a single landmass. All of the following observations support this claim except | [
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Which is a characteristic of a dog that is most likely a result of its environment? | [
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Which is an example of conduction? | [
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... |
Lactose intolerance is a condition of the digestive system in which an individual has an inability to digest lactose, the sugar found in milk. An individual affected with lactose intolerance does not produce enough of the enzyme lactase, which is needed to break down lactose. If more adults than children are diagnosed with lactose intolerance, what does this most likely suggest? | [
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... |
Miguel was conducting an experiment. He wrote the following sentences in his notebook: The starting temperature of the water was 10 degrees Celsius. An object weighing 5 grams was placed in the water. The temperature of the water increased to 15 degrees. The object must have been hotter than 10 degrees. In which sentence did Miguel make an inference? | [
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Which event occurs on a daily cycle? | [
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When a baby shakes a rattle, it makes a noise. Which form of energy was changed to sound energy? | [
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0.... |
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