Review for Energy Test The formation of rust

Review for Energy Test

� The formation of rust is a change.

� Evaporation of water is a change.

� Tearing paper in strips is change.

�A firecracker popping is change.

� Which is an example of a chemical change? 1. a balloon that is blown up. 2. Ice melting. 3. paper burning 4. a metal pan heating on the stove

� Which is an example of a physical change? 1. Metal rusting. 2. Silver tarnishing. 3. Water boiling. 4. Paper burning.

� Burning a match is a 1. chemical change 2. physical change 3. chemical property 4. physical property

� Which of the following is an example of a physical change? 1. Mixing baking soda and vinegar together causes bubbles and foam. 2. A glass cup falls from the counter and shatters on the ground. 3. The paper burns up and leaves ashes. 4. Baking a birthday cake for your mother.

� Which of the following is an example of a chemical change? 1. Filling up a balloon with hot air. 2. Taking a glass of water and freezing it by placing it in the freezer. 3. A plant collecting sunlight and turning it into food. 4. Your dog ripping up your homework.

�A flashlight changes energy from chemical into ______. 1. thermal 2. sound 3. electrical 4. mechanical

� Potential energy is the energy an object has because of its _______. 1. speed 2. position 3. size 4. density

� A car or truck moving down the highway has _______ energy by virtue of its motion. 1. kinetic 2. potential 3. thermodynamic 4. chemical

� The energy possessed by matter due to its motion is ______. 1. potential energy 2. kinetic energy 3. static energy 4. none of the above

�A toy robot can walk and talk and runs on batteries. What type of energy is stored in the batteries? 1. chemical 2. kinetic 3. nuclear 4. thermal

� Which type of energy is a form of electromagnetic energy? 1. chemical 2. light 3. nuclear 4. sound

� Israel observed a bolt of lightning during a storm. Which form of energy does a bolt of lightning produce? 1. electromagnetic 2. mechanical 3. nuclear 4. potential

� Inside the sun, hydrogen atoms combine to form helium atoms. This process releases light and warmth. Which form of energy powers the sun? 1. electromagnetic 2. mechanical 3. nuclear fusion 4. thermal

� A 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? 1. chemical energy 2. elastic energy 3. nuclear energy 4. thermal energy

� Gordon throws a baseball into the air. It rises, stops when it reaches its greatest height, and then falls back to the ground. At what point does kinetic energy convert to potential energy? 1. when the baseball is rising 2. when the baseball is falling 3. just after the baseball hits the ground 4. while the baseball is stopped in the air.

� Which energy conversion takes place when a toaster is switched on? 1. chemical to sound 2. electrical to sound 3. chemical to thermal 4. electrical to thermal

Give an example for each type. � Kinetic energy__________________ � Nuclear energy__________________ � Potential � Heat energy______________________________________

Give an example for each type. � Thermal energy________________ � Chemical � Electric energy_______________________________ � Electrochemical energy____________