When water vapor condenses to a liquid   it absorbs energy from the surroundings. its temperature drops sharply. it transfers heat to the surroundings. its temperature rises slightly.

Two students stand poised to leap off a high dive structure into the swimming pool below. Student B is twice as massive as student A. Which of the following is true?   Student B will reach the ground sooner than student A. Both students have the same gravitational potential energy. Both students will have the same kinetic energy just before impact. Student B did twice as much work climbing to the top of the structure.

The amount of heat needed to increase the temperature of 1 gram of a substance 1 degree Celsius is known as   latent heat. specific heat. a calorie. Btu.

The potential energy of a ball on the ground is zero. If the ball is now in the bottom of a hole, its potential energy is   nonexistent. the same as it was on the surface. negative. zero.

Which thermodynamic law says that you cannot convert 100 percent of a heat source into mechanical energy?   first law of thermodynamics second law of thermodynamics third law of thermodynamics law of increasing entropy

Your body judges temperature   very poorly, sensing only heat flow. within 5°C of the actual temperature. better than most thermometers. None of these.

The amount of energy produced by power-generating dams is   increasing, as more of this clean, non-polluting resource is used. increasing, as more renewable resources are used. decreasing, as more energy is used but new dams are not being built. decreasing, as old dams are destroyed for environmental reasons.

Plants convert radiant energy from the sun into chemical energy by a process called photosynthesis. 

You do more work on yourself when you run up the stairs than when you walk slowly.  

The watt (W) is a unit of   work. electrical energy. power. force.