Multiple Choice Assessment - Life Through a Lens

Darcy makes two draft excluders using different thicknesses of foam. One is 20 mm thick and the other is 40 mm thick. She tests the 20 mm draft excluder one night and the 40 mm draft excluder the next night. She collects the following data from her investigation. Thickness of Draft Excluder | Temperature of Living Room Without Draft Excluder | Temperature 1 Hour After Fitting Draft Excluder 20 mm | 16°C | 17°C 40 mm | 16°C | 18°C Which statement best explains the relationship between the thickness of the draft excluder and energy transfer?

• The 20 mm draft excluder allowed the greatest amount of energy to leave the living room, shown by the greatest increase in temperature after 1 hour.

• The 20 mm draft excluder allowed the smallest amount of energy to leave the living room, shown by the greatest increase in temperature after 1 hour.

• The 40 mm draft excluder allowed the greatest amount of energy to leave the living room, shown by the greatest increase in temperature after 1 hour.

• The 40 mm draft excluder allowed the smallest amount of energy to leave the living room, shown by the greatest increase in temperature after 1 hour

• Stuffing the draft excluder with foam to a thickness of 60 mm

• Adding an electronic heating element to the draft excluder

• Replacing the foam with recycled paper to a thickness of 50 mm

Abilash sets up an investigation using cold water and hot water. He puts three drops of red food dye in each tumbler and waits ten seconds. His results are shown below. How can he describe the relationship between the temperature of the water and the energy of the water molecules in the system?

• The lower the temperature of the water, the greater the amount of energy in the system and the faster the water molecules move.

• The higher the temperature of the water, the greater amount of energy in the system and the faster the water molecules move.

• The higher the temperature of the water, the lower amount of energy in the system and the slower the water molecules move.

• The temperature of the water has no effect on the speed of the molecules, so the amount of energy in the system does not change.

Ally's car becomes uncomfortably hot during the summer if she can’t park it in the shade. She wants to design a cover for her windshield to keep the car cool when she has to park it in the sun. She can only spend $10 on materials and has one week to make a prototype. Check the correct box to sort the criteria and constraints of her design.

• Criteria: Keeps car interior at a temperature of less than 20°C. Constraint: Costs less than $10 to produce, Time spent on design.

• Criteria: Costs less than $10 to produce. Constraint: Keeps car interior at a temperature of less than 20°C, Time spent on design.

• Criteria: Time spent on design. Constraint: Keeps car interior at a temperature of less than 20°C, Costs less than $10 to produce.

• Criteria: Keeps car interior at a temperature of less than 20°C, Time spent on design. Constraint: Costs less than $10 to produce

The designers conducted an experiment to test the lunch boxes. What was the purpose of this experiment?

• To evaluate the durability of the lunch boxes

• To assess the design aesthetics of the lunch boxes

• To test the thermal insulation of the lunch boxes

• To determine the cost-effectiveness of the lunch boxes

Which design best meets the criteria?

• Design 1, because the temperature of the ice pack after 1 hour is 13°C.

• Design 2, because the temperature of the ice pack after 1 hour is 4°C.

• Design 3, because the temperature of the ice pack after 1 hour is 2°C.