1 Railroad tracks have gaps between the rails so that they will not buckle in hot weather because of

2 How does thermal energy flow when a student holds a piece of ice in her hand?

3 Which of the following sentences best describes the process that occurs when liquid water becomes ice?

Popcorn was placed in a covered pan and the pan was warmed on a hot plate. What form of thermal energy transfer is this and why?

Popcorn was placed in a bag and cooked in a microwave oven. What form of thermal energy transfer is this and why?

Popcorn was placed in an air popper above the heat source. What form of thermal energy transfer is this and why?

7 The glass of a window pane feels cooler to the touch than the wood frame surrounding the glass. This is because

10 mL of water is at 40 degrees C is mixed with 10 mL of water at 20 degrees C. What is most likely to be the temperature of the mixture?

9 On a sunny day, exposed rock on the top of a mountain gradually heats up. What causes the rock to become warm?

A beaker of water is being heated by a single heat source at the bottom. What keeps the water at the top of the beaker the same temperature as that of the bottom?

A student is mixing a cup of hot chocolate with a spoon. How is the heat transferred between the hot chocolate and the part of the spoon that is in the hot chocolate?

What causes your skin to feel warm when it is in the sun on a summer day?

Place the objects below in order from greatest thermal energy to least thermal energy. A glacier at -5°C, A cup of coffee at 70°C, A can of soda at 5°C, A swimming pool at 28°C

Which of the following spoon handles would get hot the quickest in a pan of hot soup?

A darkcolored wall becomes warm when the sun shines on it. After sunset, a person standing a meter away can feel warmth from the wall. How does heat transfer from the wall to the person?

A small container of water at 30° C was placed in a large container of water at 70° C. The temperature of each container was measured. After 30 minutes, what most likely occured?

A student put a metal pot on the stove to boil some water. The metal transferred heat to the water through

How would you label a convection current?

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