Worksheets2nd six weeks test review
Total questions: 12
Worksheet time: 6mins
Ross puts ice cubes into a glass of water at room temperature. He feels the water change from warm to cold as thermal energy transfers from the water to the ice cubes. When will the thermal energy stop flowing?
when the ice cubes completely melt
when the water in the glass freezes
when the water reaches 32C
when the water refreezes into one big block of solid ice
Christopher splits a bagel in half and places both sides of the bagel in the toaster. She turns on the toaster, and within a few minutes the bagel pops out, brown and toasted. What types of heat transfer toasted the bagel?
radiation
conduction
convection
radiation and conduction
Which of the following situations involves potential energy changing into kinetic energy?
A car taking off from a stoplight
A car coming to a stop
A moving ball being caught
A rollercoaster going down a hill
Which best describes what is occurring when a moving car comes to a stop?
The car’s kinetic energy is increasing and its potential energy is decreasing
The car’s kinetic energy is decreasing and its potential energy is increasing
The car’s kinetic energy is increasing and its potential energy is increasing
The car’s kinetic energy is decreasing and its potential energy is decreasing
Bob and Brian go on a Boy Scout camping trip. As they begin to make their campfire, they realize they forgot to bring something to start the fire. The boys decide to rub two dry sticks together vigorously until the sticks begin to make a spark. The boys quickly add twigs and leaves to the small flame, eventually building a fire.
Which energy transformations occur during the formation of the campfire?
mechanical energy ---> chemical energy
heat energy ---> chemical energy
mechanical energy---> heat energy
chemical energy ---> heat energy
The density of silver is 10.49 g/cm3. If a sample of pure silver has a volume of 12.993 cm3, what is the mass?
23.48 g
0.80 g
2.50 g
136.29 g
What is the mass of a 350 cm3 sample of pure silicon with a density of 2.336 g/cm3?
817.6 g
149.82 g
352.33 g
347.66 g
Students are conducting a laboratory investigation over the flow of thermal energy. They put a sealed Ziploc bag filled with water at 50˚ C into a beaker filled with the same amount of water but 80˚ C. The students then put the beaker into an insulated bucket. Based on your knowledge of thermal energy, what can be predicted about what will happen next?
Thermal energy will flow from the cooler water in the bag to the warmer water in the beaker so the temperature of the water in the beaker will be less than that of the bag.
Thermal energy will flow from the warmer water in the beaker to the cooler water in the bag so the temperature of the water in the bag will be warmer than that in the beaker.
Thermal energy will flow from the cooler water in the bag to the warmer water in the beaker so the temperatures will be even.
Thermal energy will flow from the warmer water in the beaker to the cooler water in the bag so the temperatures will be even.
A cook heats a meal in the microwave oven. What energy transformations occur between the microwave oven and the meal?
electrical--> light--> chemical
chemical--> thermal--> light
electrical--> electromagnetic--> thermal
chemical--> electromagnetic--> chemical
A student finds a rock on the way to school. In the laboratory he determines that the volume of the rock is 22.7 mL, and the mass in 39.943 g. What is the density of the rock?
62.64
17.24
1.75
906.70
A wooden block has a mass of 562 g and a volume of 72 cm3. What is the density?
634 g/cm3
7.80 g/cm3
490 g/cm3
40,464 g/cm3
A soda has a volume of 560 mL and a density of 3.2 g/mL. What is the mass?
175 g
563.2 g
1,792 g
556.8 g
