An aluminum block with a temperature of 300oC is placed into 200 milliliters of water with a temperature of 20oC. Which statement best describes what will be observed in this experiment? a Heat will flow from the metal to the water until both are at a temperature somewhere between 20oC and 300oC. b Heat will flow from the metal to the water until both are 300oC. c Heat will flow from the metal to the water until both are 20oC. d Heat will flow from the metal to the water until both are at the temperature of the container. Question 2 (1 point) A mixture of gases is heated and rises to the top of its container. Which statement best explains this result? a Heated gases will have increased kinetic energy and increased density. b Heated gases will have decreased kinetic energy and increased density. c Heated gases will have decreased kinetic energy and decreased density. d Heated gases will have increased kinetic energy and decreased density. Question 3 (1 point) A student wants to show the transfer of heat energy without matter. Which investigation design would best help the student? a an investigation of radiation through a current in a fluid b an investigation of conduction through the movement of particles through a solid c an investigation of radiation through electromagnetic waves d an investigation of conduction through collisions between particles in space Question 4 (1 point) The diagram below shows two substances, A and B, which are at different temperatures. What will happen when substance A is dropped into substance B? a Substance A and B will exchange heat, and they both will reach 50°C. b Substance A and B will exchange heat, and they both will reach 25°C. c Substance A will get even warmer as heat flows into it from substance B. d Substance A and B will eventually reach the same temperature. Question 5 (1 point) During an experiment, a canister filled with hot water was added to a beaker filled with cold water. In which direction did the heat energy move? a No heat energy moved, as it all remained in the canister of hot water. b The heat energy moved from the hot water of the canister into the cold water of the beaker. c Equal amounts of heat energy from each container moved in both directions. d The heat energy moved from the cold water of the beaker into the hot water of the canister. English Support PowerSchool Community PRIVACY P
The correct answers are:
1. a Heat will flow from the metal to the water until both are at a temperature somewhere between 20oC and 300oC.
2. d Heated gases will have increased kinetic energy and decreased density.
3. c an investigation of radiation through electromagnetic waves.
4. d Substance A and B will eventually reach the same temperature.
5. b The heat energy moved from the hot water of the canister into the cold water of the beaker.