Science Review Alejandro

Which of the following statements is true?

• The fancy cup has extra insulators keeping drinks cooler for longer periods of time.

• The fancy cup has is not good for keeping drinks cooler longer times.

• The regular cup has extra insulators keeping drinks cooler for longer periods of time.

• There is no difference between a regular cup and a fancy cup.

Why does adding a lid help decrease the amount of water leaving the system?

• A lid reduces evaporation by limiting the exposure of water to air. Without a lid, water

  molecules can escape into the air, but the lid traps the moisture, keeping it in the system.

• A lid acts as insulation, reducing heat exchange between the water and the

  environment. It slows the loss of heat when the water is warm and the absorption of heat

  when the water is cool.

• The lid makes no difference.

Why does adding a lid help decrease the amount that the water temperature changes?

• A lid reduces evaporation by limiting the exposure of water to air. Without a lid, water

  molecules can escape into the air, but the lid traps the moisture, keeping it in the system.

• A lid acts as insulation, reducing heat exchange between the water and the

  environment. It slows the loss of heat when the water is warm and the absorption of heat

  when the water is cool.

• The lid makes no difference.

Which of the following is not a system where adding/removing a cover affects liquid/temperature?

• Pots and pans

• Beverage bottles

• Greehnouses

• regular cup

Would temperature still change if the cup were sealed completely?

• Yes, the temperature would still change. Even if sealed, heat can still be transferred to or from the

  surroundings (e.g., through conduction). Cold water would warm up and hot water would

  cool down over time unless the surroundings are perfectly insulated.

• No. the temperature would remain the same.

How will the motion of particles in a solid at a lower temperature compare with the motion of particles in a solid at a higher temperature?

• In a solid at a lower

  temperature, the particles remain the same compared to those in a

  solid at a higher temperature, where the particles vibrate faster and more energetically.

• In a solid at a lower

  temperature, the particles vibrate more and move faster compared to those in a

  solid at a higher temperature, where the particles vibrate faster and more energetically.

• In a solid at a lower

  temperature, the particles vibrate less and move more slowly compared to those in a

  solid at a higher temperature, where the particles vibrate faster and more energetically.

What will happen to the motion of the particles over time in a hot solid and a cold solid when they are touching each other?

• When a hot solid and a cold solid touch,

  the faster-moving particles in the hot solid transfer energy to the slower-moving particles

  in the cold solid. Over time, the particles in both solids will reach a common intermediate

  speed, leading to thermal equilibrium.

• When a hot solid and a cold solid touch,

  the slower-moving particles in the hot solid transfer energy to the faster-moving particles

  in the cold solid. Over time, the particles in both solids will reach a different intermediate

  speed, leading to thermal equilibrium.

• When a hot solid and a cold solid touch,

  the particles remain the same always.

How does the amount of a solid’s surface in contact with another solid’s surface affect the amount of temperature change in both solids?

• The amount of surface

  contact between two solids affects how slowly and no heat is transferred

  between them. A larger surface area in contact allows for less particle interactions,

  which decreases the rate of heat transfer

• The amount of surface

  contact between two solids affects how quickly and efficiently heat is transferred

  between them. A larger surface area in contact allows for more particle interactions,

  which increases the rate of heat transfer

• The amount of surface

  contact between two solids does not vary and therefore there is no change.

How does the amount of particles in 2 solids in contact with each other affect the amount of temperature change in both solids?

• The amount of particles in two solids

  in contact with each other affects the temperature change by influencing the rate of heat

  transfer. The solid with greater mass will lose heat slower than the one with less mass.

• The amount of particles in two solids

  in contact with each other does not affect the temperature change and does not influence the rate of heat

  transfer.

Draw how particles move in a solid, liquid and gas.