Comparing Designs with Evidence Worksheet

Question 1

A design must cost no more than $15. Which cost satisfies this requirement?

1. $13
2. $16
3. $17
4. $20

Question 2

Two feasible containers have different masses and heat losses. Explain why deciding which is better requires knowing the priority.

Write your answer and work on the printable worksheet, or answer online.

Question 3

Which control makes a comparison of heat loss fairer?

1. Start every trial with the same mass of water at the same temperature.
2. Start each trial at a different temperature.
3. Measure the containers for different lengths of time.
4. Use a different outcome for every design.

Question 4

Explain why a design with the smallest heat loss can still be rejected when there is a strict mass limit.

Write your answer and work on the printable worksheet, or answer online.

Question 5

Which designs meet both limits?

1. P and Q
2. P and R
3. Q and S
4. All four

Question 6

Select a design and justify it using all three measurements.

Write your answer and work on the printable worksheet, or answer online.

Question 7

How much smaller is Q’s temperature drop than P’s?

Write your answer and work on the printable worksheet, or answer online.

Question 8

If the cost limit falls to $14 while the mass limit stays 400 g, which design now satisfies both?

1. P only
2. Q only
3. R only
4. P and R