Energy_Forces_Speed
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- Q 1/28Score 0Emma 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?29Chemical energy transforms into electrical energy.Mechanical energy transforms into electrical energyElectrical energy transforms into mechanical energy.Mechanical energy transforms into chemical energy.
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- Q1Emma 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?Chemical energy transforms into electrical energy.Mechanical energy transforms into electrical energyElectrical energy transforms into mechanical energy.Mechanical energy transforms into chemical energy.120s
- Q2Which of these is an example of kinetic energy changing to potential energy?Players running from base to baseThe sun warming the playgroundA bell ringing inside the schoolA ball rolling uphill to a stop120s
- Q3An example of kinetic energy continuously being changed to potential energy and back again might be _______.A train moving down a trackElectric charges moving in a straight pathA girl swinging on a swingA plate sitting on the edge of a table120s
- Q4The illustration below shows the locations of a rock as it rolls down a slope. Which location shows the rock with the greatest potential energy?2431120s
- Q5The illustration below shows the locations of a rock as it rolls down a slope. Which location shows the rock with the greatest kinetic energy?4321120s
- Q6At which labeled point does the diver have the LEAST potential energy?4132120s
- Q7A group of sheep are grazing in a field. As they eat, the sheep break down the molecules in the grass, which releases energy. Which form of energy is stored in the grass?Nuclear energyChemical energyElastic energyThermal energy120s
- Q8Damon is a musician playing in a band. At the end of a song, he plucks a single guitar string. The string moves rapidly back and forth as shown in the figure below. Which of these statements explains what happens to the kinetic energy of the moving string?The kinetic energy is converted to sound energy and thermal energy.The kinetic energy is destroyed until no energy remains.The kinetic energy is changed into potential energy and stored.Some of the energy is converted to sound energy, but the rest is destroyed.120s
- Q9When a space shuttle takes off, the chemical reactions of the fuel give the shuttle the kinetic energy to leave Earth’s atmosphere as shown in the figure below. The kinetic energy of the space shuttle is less than the potential energy of the fuel used. Which statement BEST explains this idea?The potential energy is used to overcome Earth’s gravity.The potential energy is destroyed by the warmth of the reaction.The potential energy is also converted to light, thermal energy, and sound energy.The potential energy must be consumed to make the fuel burn.120s
- Q10Meg designs an experiment to see which of three types of sneakers provides the most friction. She uses the equipment listed below. 1. Sneaker 1 2. Sneaker 2 3. Sneaker 3 4. Spring scale She uses the setup illustrated above and pulls the spring scale to the left. In what direction does the force of friction act?UpwardTo the rightTo the leftDownward120s
- Q11Gordon is making a list of forces for his science class. Which of the following should Gordon NOT list as a force?MassA push or pullFrictionGravity120s
- Q12Which of the following explains why the Earth is not moving toward you when you jump up in the air?You don't weigh enough to affect Earth's surface.Your mass is very small compared to Earth's mass.Earth exerts a gravitational force on itself.Earth's fixed orbit around the Sun keeps it from moving.120s
- Q13The law of universal gravitation states that any two objects in the universe that have mass, without exception,Attract each other.Combine to provide a balanced force.Repel each other.Create friction.120s
- Q14The forces acting on a falling leaf areGravity and friction (air resistance).Gravity and inertia.Inertia and friction.Mass and inertia.120s
- Q15Which of the following is an example of a contact force?Gravitational forceElectrical forceMagnetic forceNormal force120s
