ACT Science practice 1

What was the lowest average weekly air temperature recorded during the study?

• 13.74°C

• 18.48°C

• 19.68°C

• 21.15°C

Answer explanation

Find the lowest value in Table 2. This appears in row Week 2 and column Section 3. The lowest average weekly air temperature recorded during the study is 18.48°C.

What was the average light intensity of Section 3 in Week 3 ?

• 69.6

• 76.8

• 76.9

• 80.7

Answer explanation

The value in the Week 3 row of the Section 3 column in Table 1 is 76.8.

What was the total change in average air temperature from Week 3 to Week 4 in Section 3 ?

• –0.34°C

• +0.34°C

• +1.24°C

• None of the above

Answer explanation

Find the temeprature values for Section 3 during Week 3 and Week 4 on Table 2. Then, find their difference. 18.98 – 18.64 = 0.34°C. The temperature increased from Week 3 to Week 4 so the change should be positive.

Tags

NGSS.MS-PS3-4

What section experienced the largest overall change in temperature during the study?

• Section 1

• Section 2

• Section 3

• None of the above

Answer explanation

Find the highest and lowest value for each section in Table 2. Then, find the difference of these values for each section and determine which section has the greatest difference. The difference between the first and last temperatures in the Section 1 column on Table 2 is 1.47°C, which is a larger change than the other sections.

Tags

NGSS.MS-PS3-4

What was the highest average weekly air temperature recorded during the study?

• 18.48°C

• 19.68°C

• 21.15°C

• 24.91°C

Answer explanation

Find the highest value in Table 2. This appears in row Week 5 and column Section 1. The highest average weekly air temperature recorded during the study is 21.15°C.

Which liquid had the highest molecular mass?

• Hexane

• Petroleum Ether

• Ethanol

• H20

Tags

NGSS.MS-PS1-2

Does the liquid with the highest density also have highest viscosity?

• Yes, and it is Ethanol

• Yes and it is H20.

• No, because H20 has second highest viscosity while it has the highest density.

• No, because all liquids have the same density.

What is a line graph used for?

• Recording something over time
• Percentages

On which axis would you place the dependent variable?

• X
• Y
• Z

On which axis would you place the independent variable?

• X
• Y
• Z