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science

Terms in this set (21)

Objects of different masses are suspended from a height. Which combination of features will have the greatest gravitational potential energy?
height mass and high height
Which statement most accurately describes the Law of Conservation of Energy? *
Energy cannot be created or destroyed, but it can change from one type to another.
What energy transformation takes place when a radio is plugged in and turned on?
electrical to sound
When you open the door to a refrigerator for a minute, what happens?
Thermal energy in the air outside the refrigerator is transferred to the inside of the refrigerator.
A student removes a pitcher of chilled lemonade from a 5°C refrigerator and leaves the pitcher in a 20°C room for several hours. Which of the following statements best describes the flow of energy during this time?
Heat energy flows from the room to the lemonade until the lemonade and the room are the same temperature.
Which of the following statements describes what most likely occurs when thermal energy is removed from a liquid?
The temperature of the liquid decreases
Which location has the greatest kinetic energy
1
Heat from the fireplace below will move to warm the room by...
radiation
Which units are used for measuring energy
joules
Which list consists of only renewable energy sources?
wind, solar, hydroelectric, tidal
The temperature in a classroom is 15°C (59°F). The teacher turns the thermostat to 20°C (68°F) and keeps the door closed. Which of the following statements best describes the change that occurs as the temperature in the room increases to 20°C?
The room becomes warmer as cold energy is pushed out of the room.
Which list consists of only non-renewable energy sources?
nuclear, petroleum, coal, natural gas
Jenna noticed that the hood of the car was hot after driving it for a while. What energy transformation was she noticing?
thermal energy transforming to motion (kinetic)
Which of the following methods will NOT melt an ice cube quickly? *
Put it in an insulating container.
Ben had a 200 mL cup of hot chocolate that was 95° Celsius and was too hot to drink. His mother suggested he add some cold milk to cool it off so he added 50 mL of milk, which was at 5° Celsius. What was the approximate temperature of Ben's hot chocolate?
75°Celsius
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