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1 Question 1 Use the diagram and information below to answer question #. A teacher places a ribbon of magnesium on a wire and suspends it in a flask. She then seals the flask and runs electricity through the wire to ignite the magnesium. After the magnesium is completely burned, a student notices a white powder in the bottom of the flask. The mass of the flask system (the flask and its contents) is determined before and after the magnesium is ignited. Which statement correctly compares the mass of the flask system before the magnesium burned with the mass of the flask system after the magnesium burned? A. The mass of the flask system before burning is greater than the mass of the flask system after burning. B. The mass of the flask system before burning is less than the mass of the flask system after burning. C. The mass of the flask system before burning is the same as the mass of the flask system after burning. D. The mass of the flask system before burning is not related to the mass of the flask system after burning. Use the information below to answer questions #-##. Density Experiment The two graduated cylinders pictured can hold the same amount of water and use the same scale. A student measures the masses of two metal balls. One ball is made of aluminum and the other ball is made of lead. The student adds 50 ml of water to each graduated cylinder and then drops one metal ball into each graduated cylinder. Question 2 The teacher asks the student to use the information she collected to compare the density of the two metal balls. The mass of the lead ball is 113 grams and the mass of the aluminum ball is 27 grams. What can be concluded about the density of these metal balls based on this investigation? A. The density of both metal balls is the same. B. The density of both metal balls is less than the density of the water. C. The density of the lead ball is less than the density of the aluminum ball. D. The density of the lead ball is greater than the density of the aluminum ball. ohio3-8.success-ode-state-oh-us.info/practicetest/customizeview.aspx?testid=202740&printresults=true&viewall=true 1/13

2 Question 3 In repeating the investigation, the student accidentally drops and steps on the lead ball. This action changes its shape from a sphere to an egg-shaped solid. The lead ball is placed back into the graduated cylinder. In your Answer Document, predict what effect, if any, this change has on the amount of water displaced by the lead ball. Explain your prediction. (2 points) Question 4 Most electric power is generated by burning fossil fuels. A family living in central Ohio uses electric appliances for cooking and air conditioning. They use fuel oil for heating. What change could this family make to conserve fossil fuels? Question 5 A. convert to natural gas as a fuel for cooking B. switch to the use of less expensive coal for heat C. lower the temperature setting on the air conditioner D. install solar roof panels to generate additional electricity Use the following information to answer question #. The table below lists the densities of several materials. Which material will float in water? A. limestone B. magnesium C. sulfur D. wax Question 6 Why is coal considered to be a nonrenewable energy source? A. Sunlight is the original source of energy for coal. B. The burning of coal could cause environmental pollution. C. Once coal is mined, it can take millions of years to be replaced. D. Coal is abundant, but it is very expensive to mine from underground. ohio3-8.success-ode-state-oh-us.info/practicetest/customizeview.aspx?testid=202740&printresults=true&viewall=true 2/13

3 Use the information below to answer questions #-##. Toy Car Race Ms. Williams science class uses a toy car race to study and collect data about forces and motion. The racetrack shown has a 6-meter ramp and a 5-meter level section to the finish line. Two cars compete at a time. The data table and graph below show the speed and total distance traveled for car 1 and car 2 during the first three seconds of a race. Question 7 On what section of the racetrack will the forces on the cars be balanced? A. the starting block B. the ramp only C. the level section after the ramp D. the entire track ohio3-8.success-ode-state-oh-us.info/practicetest/customizeview.aspx?testid=202740&printresults=true&viewall=true 3/13

4 Question 8 Electricity is produced in a hydroelectric plant when moving water turns a turbine. Which describes this energy transformation from the turning turbine to electricity? Question 9 A. kinetic energy into electric energy B. nuclear energy into electric energy C. thermal energy into electric energy D. chemical energy into electric energy Use the information in the table below to answer question #. A class is studying electricity and how it is produced in Ohio. The students make the table below to share information about energy sources. Which statement identifies a nonrenewable energy source from the table and correctly explains why this source is considered nonrenewable? A. Biomass is nonrenewable because once the waste material is used up, there is no way to produce additional waste material. B. Petroleum is nonrenewable because there is a fixed amount of oil underground and new petroleum takes millions of years to form. C. Solar energy is nonrenewable because there is only one sun in the solar system and there is no replacement when the sun is used up. D. Wind energy is nonrenewable because the air pressure difference required to produce wind is not available at all times at all locations. Question 10 Use the following information and diagram to answer question #. A ball is released from rest at position 1. The diagram shows the ball in four positions as it rolls along a track from left to right. ohio3-8.success-ode-state-oh-us.info/practicetest/customizeview.aspx?testid=202740&printresults=true&viewall=true 4/13

5 In which position does the ball have its minimum gravitational potential energy and maximum kinetic energy? A. 1 B. 2 C. 3 D. 4 Use the information below to answer questions #-##. Baking Soda and Vinegar Reaction Students perform a chemistry experiment by mixing baking soda with vinegar. They mix 4 grams of baking soda with 50 grams of vinegar in a 6-gram plastic cup as shown below. The cup is left uncovered. The students record the mass and temperature of the mixture every 5 seconds. They continue these observations until 10 seconds after they see the mixture stop bubbling. Their data are shown in the table below. Question 11 The data in the table show the temperature of the cup-baking soda-vinegar system. The temperature of the surrounding air was not measured. Assuming that the total amount of energy remains constant, what conclusion about energy transfer does the temperature data support? ohio3-8.success-ode-state-oh-us.info/practicetest/customizeview.aspx?testid=202740&printresults=true&viewall=true 5/13

6 A. Thermal energy was lost from the surrounding air and the system. B. Thermal energy was gained by the system and the surrounding air. C. Thermal energy was transferred from the surrounding air to the system. D. Thermal energy was transferred from the system to the surrounding air. Question 12 The data show that the mass of the cup and its contents decreases while the mixture is bubbling. In your Answer Document, explain why the mass of the cup and its contents at 25 seconds is less than the initial total mass of the cup, baking soda and vinegar. Include in your answer a valid scientific reason on which you based your explanation. (2 points) Question 13 An adult and a small child are at the playground. The child sits on the end of a seesaw, as shown. The adult weighs twice as much as the child. At which point on the seesaw will the adult need to sit in order to balance the child s weight? A. point A B. point B C. point C D. point D ohio3-8.success-ode-state-oh-us.info/practicetest/customizeview.aspx?testid=202740&printresults=true&viewall=true 6/13

7 Use the information below to answer questions #-##. Block and Ramp Students investigated the motion of wooden blocks on ramps. They used two boards, each two meters long, to create ramps. They set the ramps up at different heights, as shown in the diagram below. Next they took two identical blocks (I and II) and placed one at the top of each ramp. They placed the blocks so that the back edge of each block was even with the edge of the ramp (distance = 0 meters). The students held the blocks so that the blocks would not slide until the students released them. The students released the blocks at time = 0 seconds. They measured the total distance traveled by each block at 1-second intervals as the blocks slid down the ramps. The students recorded their results as shown below. Question 14 In your Answer Document, name two forces that acted on the blocks as they slid down the ramps. Describe or show how each force you listed affected the motion of the block. (4 points) Question 15 The energy of blowing wind can be harnessed to create electricity. Why is wind considered a renewable energy source? A. Wind does not cause destruction of the environment. B. Wind turns the blades of a windmill that creates electricity. C. Wind provides only a very small amount of electricity to the United States. D. Wind comes from atmospheric conditions that are available indefinitely. Question 16 The following steps describe the process of generating electricity by burning coal in a power plant: ohio3-8.success-ode-state-oh-us.info/practicetest/customizeview.aspx?testid=202740&printresults=true&viewall=true 7/13

8 Which energy transformation occurs during this process? A. Nuclear energy of the steam is converted to thermal energy of the turbine. B. Mechanical energy from the turbine is converted to electric energy in the generator. C. Electric energy from the generator is converted to chemical energy in the power lines. D. Chemical energy from the generator is converted to electric energy in the power lines. Question 17 A tightly sealed glass box has a mass of 20,000 grams and contains a 5-gram cube of ice, making the total mass 20,005 grams. The box with the ice is placed in direct sunlight. After three hours, the box appears to be empty, with just small droplets along the sides of the box. Which statement describes the mass of the sealed box after sitting in the sun? A. The mass decreases because the ice melted into a liquid. B. The mass remains the same as the ice melts and then evaporates. C. The mass increases as the gases inside the box absorb energy and expand. D. The mass increases as the water vapor condenses into small droplets on the glass. Question 18 Why are fossil fuels called nonrenewable resources? A. They make waste products. B. They are buried far underground. C. They take a very long time to produce. D. They are more expensive than nuclear fuels. Question 19 Which is a major advantage of using energy sources such as sunlight, wind and running water instead of fossil fuels, such as coal and natural gas? A. Sunlight, wind and running water are much more efficient than fossil fuels. B. Sunlight, wind and running water are renewable and available indefinitely. C. Sunlight, wind and running water are much less expensive to use than fossil fuels. D. Sunlight, wind and running water can be used at any geographical location. ohio3-8.success-ode-state-oh-us.info/practicetest/customizeview.aspx?testid=202740&printresults=true&viewall=true 8/13

9 Use the information below to answer questions Motion Diagram The graph below shows the position of a car in motion along an east-west road over a period of 10 minutes. The car s position is recorded at 1-minute intervals. At time = 0, the car s position is at the starting point. Question 20 What is the car s motion relative to the starting point at time = 8 minutes? A. at rest at the starting point B. in motion at the starting point C. moving toward the starting point D. moving away from the starting point ohio3-8.success-ode-state-oh-us.info/practicetest/customizeview.aspx?testid=202740&printresults=true&viewall=true 9/13

10 Use the information in the table below to answer questions Properties of Some Substances A scientist measures out 15 ml each of baking soda, salt, sugar, iron filings, and corn starch. She runs a series of procedures and records her results in the table below. The first column in the table indicates the procedure. The remaining columns indicate her results for each substance. Question 21 According to the information in the table, what comparison can the scientist make about the densities of sugar and corn starch? A. Sugar is more dense than corn starch. B. Corn starch is more dense than sugar. C. Sugar and corn starch have the same density. D. Both sugar and cornstarch are more dense than salt. Question 22 The scientist observes the rust on the sample of iron filings and dries the sample thoroughly. The scientist weighs the entire sample and finds that it has more mass than the original 118 grams. What explains this increase in mass? A. The sample gained mass during drying. B. The sample gained mass during a physical change. C. The sample gained mass during a change of state. D. The sample gained mass during a chemical change. Question 23 What two changes does sugar undergo when heated in a spoon over a flame? ohio3-8.success-ode-state-oh-us.info/practicetest/customizeview.aspx?testid=202740&printresults=true&viewall=true 10/13

11 A. two physical changes B. two chemical changes C. a chemical change and then a physical change D. a physical change and then a chemical change Question 24 Which action demonstrates a chemical change? A. Long hair is cut and dried. B. A wooden pencil is sharpened and breaks. C. An ice cube melts and becomes a clear liquid. D. An iron nail becomes orange and flaky on the surface. Use the water cycle diagram to answer questions Water Cycle Question 25 What evidence suggests that water goes through a physical change when it evaporates in the water cycle? A. The density of the water remains the same. B. The volume of the water remains the same. C. The physical properties of the water remain the same. D. The chemical properties of the water remain the same. ohio3-8.success-ode-state-oh-us.info/practicetest/customizeview.aspx?testid=202740&printresults=true&viewall=true 11/13

12 Use the power-plant diagrams and information below to answer questions Power Plants An electric power plant in Toledo, Ohio, is powered by coal (see Figure 1). The coal is burned to boil water and produce steam. The steam turns a turbine, which causes the generator to produce electricity. The power plant in Belleville, West Virginia, is hydroelectric (see Figure 2). Water from the lake behind the dam falls on the turbine blades. The turbine turns, which causes the generator to produce electricity. Question 26 Which describes a chemical change and a physical change that take place during the production of electricity in the coal-fired power plant (Figure 1)? A. The coal moving along the conveyor belt is a chemical change. The coal burning to give off heat and carbon dioxide gas is a physical change. B. The coal burning to give off heat and carbon dioxide gas is a chemical change. The boiling water turning to steam is a physical change. C. The boiling water turning to steam is a chemical change. The steam turning the turbine is a physical change. D. The steam turning the turbine is a chemical change. The turbine running the generator to produce electricity is a physical change. Question 27 ohio3-8.success-ode-state-oh-us.info/practicetest/customizeview.aspx?testid=202740&printresults=true&viewall=true 12/13

13 The hydroelectric plant (Figure 2) uses a renewable energy resource. Which statement describes why this resource is considered renewable? A. Heated water turns the turbine. The used water flows upstream back directly into the lake and may be used again right away. B. Falling water turns the turbine. The used water flows upstream back directly into the lake and may be used again right away. C. Heated water turns the turbine. The water is returned to the river downstream, so it may continue in the water cycle. D. Falling water turns the turbine. The water is returned to the river downstream, so it may continue in the water cycle. Question 28 In any physical or chemical process, what two quantities are always conserved? A. matter and total energy B. light and acoustic energy C. density and thermal energy D. gravity and potential energy ohio3-8.success-ode-state-oh-us.info/practicetest/customizeview.aspx?testid=202740&printresults=true&viewall=true 13/13

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