8th Grade - Semester 1 A
Quiz by Oksana Tariche
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- Q 1/30Score 0Matthew has six cubes of different materials. Each cube has a mass of 10 grams (g). Matthew sorts the cubes into two groups using one physical property. Which physical property did Matthew most likely use to sort the cubes into two groups?29DensityElectrical conductivityMagnetismMelting point
30 questions
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- Q1Matthew has six cubes of different materials. Each cube has a mass of 10 grams (g). Matthew sorts the cubes into two groups using one physical property. Which physical property did Matthew most likely use to sort the cubes into two groups?DensityElectrical conductivityMagnetismMelting point120s
- Q2Density is the ratio of mass to volume. Troy listed the density of four metals at 20 °C. If Troy has a 4-cm cube of each of these metals, which cube will have the greatest mass?IronLeadGoldBrass120s
- Q3A piece of titanium has a mass of 18 grams. Using a graduated cylinder partly filled with water, a scientist found that the titanium displaced 4 milliliters of water. What is the density of titanium?4.5 g/cm 3324 g/cm 318 g/cm 30.22 g/cm 3120s
- Q4Emma constructed a simple motor. When connected correctly, the coil of copper wire spins. Which of the following best describes the energy transformation that takes place between the paper clips and the spinning coil?Mechanical energy transforms into electrical energyElectrical energy transforms into mechanical energy.Mechanical energy transforms into chemical energyChemical energy transforms into electrical energy.120s
- Q5On a sunny day, Heidi and some of her classmates are playing kickball during PE. She kicks the ball past second base, and it rolls uphill to a stop. She runs to first base, but before she gets any farther, the bell rings and everyone has to go back inside. Which of these is an example of kinetic energy changing to potential energy?The players running from base to baseThe ball rolling uphill to a stopThe sun warming the playgroundThe bell ringing inside the school120s
- Q6These two beakers contain the same liquid substance at the same temperature. How does the thermal energy of the liquid in the larger beaker compare to the thermal energy of the liquid in the smaller beaker?The liquid in the larger beaker has more thermal energy than the liquid in the smaller beaker.The liquid in the larger beaker has less thermal energy than the liquid in the smaller beaker.The exact volume of liquid in each beaker must be known to compare the thermal energy of the liquids.The liquid in the larger beaker has the same amount of thermal energy as the liquid in the smaller beaker.120s
- Q7Kito puts his spoon into a helping of fresh, hot, mashed potatoes as shown in the figure below. Which process takes place when the two objects come together?The average temperature of the spoon does not change.The thermal energy of both the mashed potatoes and the spoon increases as energy in the form of heat is transferred between them.The temperature of the spoon increases, but its thermal energy does not change.Energy in the form of heat is transferred from the warmer mashed potatoes to the cooler spoon120s
- Q8Which of these choices best describes the temperature of a substance?The average kinetic energy of the particles that make up a substanceThe sum of the kinetic energy of all of the particles of a substanceThe total kinetic and potential energies of the particles of a substanceThe difference between the kinetic energy and potential energy of a substance120s
- Q9Which of these choices best describes the thermal energy of a substance?The total kinetic and potential energies of the particles of a substanceThe sum of the kinetic energy of all of the particles of a substanceThe difference between the kinetic energy and potential energy of a substanceThe average kinetic energy of the particles that make up a substance120s
- Q10An example of kinetic energy continuously being changed to potential energy and back again might be _______.A girl swinging on a swingA plate sitting on the edge of a tableA train moving down a trackElectric charges moving in a straight path120s
- Q11The illustration below shows the locations of a rock as it rolls down a slope. Which location shows the rock with the greatest kinetic energy?1423120s
- Q12The illustration below shows the locations of a rock as it rolls down a slope. Which location shows the rock with the greatest potential energy?2143120s
- Q13Which is the BEST example of something that has kinetic energy?A rock sitting at the top of a steep hillA tennis ball rolling across the courtA picture hanging on the wallA piece of wood before it is burned120s
- Q14At which labeled point does the diver have the LEAST potential energy?3142120s
- Q15Ashton warms a pure, solid substance. He graphs the changes in temperature over time as shown in the figure below. What is happening as he warms the substance?The speed of the molecules is not changing.The molecules speed up and then decrease their speed.The molecules are moving more slowly.The molecules are moving more rapidly.120s
