Thermal Energy Unit 2 Test

Front

What changes occur to water when heat energy is added to it in a pot on a stove?

Back

Particles move faster, and temperature increases.

Front

Direction of heat flow in the bowl of water resulting in the melting of the ice cube?

Back

bowl → water → ice cube

Front

What is the difference in the temperature of water in the beaker? Options: 10°C, 20°C, 30°C, 50°C

Back

10°C

Front

Which soda has a higher amount of thermal energy, and why? Options:

The soda in the can outside; the particles in the soda are moving faster.

,

The soda in the can outside; the particles in the soda are moving slower.

,

The soda in the can in the refrigerator; the particles in the soda are moving faster.

,

The soda in the can in the refrigerator; the particles in the soda are moving slower.

Back

The soda in the can outside; the particles in the soda are moving faster.

Front

How does the temperature of the coffee change, and why? Options: The temperature increases as thermal energy moves from the coffee to the ice cube. The temperature increases as thermal energy moves from the ice cube to the coffee. The temperature decreases as thermal energy moves from the coffee to the ice cube. The temperature decreases as thermal energy moves from the ice cube to the coffee.

Back

The temperature decreases as thermal energy moves from the coffee to the ice cube.

Front

What is the best way to describe how thermal energy is being transferred? Options: Heat moves from the ice to the water, Cold moves from the ice into the water, Heat moves from the air into the water, Cold moves from the water into the room.

Back

Heat moves from the air into the water.

Front

In what segment of his graph does the water have the lowest kinetic energy? Options:

1–2

,

2–3

,

3–4

,

4–5

Back

1–2

Front

Which will increase the energy of motion of water molecules? Options: add heat, add ice, remove some of the water, place the water in the freezer

Back

add heat

Front

Why was the air closest to the bulb warmest?

Back

The bulb radiated heat.

Front

Why does a block of ice melt when placed on a hot sidewalk?

Back

The energy from the sidewalk flows to the ice.