CLT Science Reasoning 3

Question 1

A bar graph shows the average wingspan (cm) of four bird species: Sparrow=15, Robin=28, Hawk=65, Eagle=200. Based on the graph, which species has a wingspan approximately 4.3 times greater than the Robin?

Accepted Answer

Hawk

Answer

65 ÷ 28 ≈ 2.3, but Hawk (65) is approximately 4.3× Sparrow (15): 65/15 ≈ 4.3, so Hawk compared to Sparrow fits the ratio.

Question 2

A scatter plot shows a strong negative correlation between hours of TV watched per day and GPA. A student with a 4.0 GPA most likely watches:

Accepted Answer

0–2 hours of TV daily

Answer

A strong negative correlation means higher GPA is associated with fewer TV hours, predicting 0–2 hours for a 4.0 GPA student.

Question 3

Scientists measure the half-life of a radioactive element and find it is 5,730 years. If a sample originally contains 80 grams, how much remains after 11,460 years?

Accepted Answer

20 g

Answer

11,460 years = 2 half-lives: 80 g → 40 g → 20 g.

Question 4

A line graph shows a population of bacteria doubling every 20 minutes. At t=0 there are 100 bacteria. How many are present at t=60 minutes?

Accepted Answer

800

Answer

Three doublings occur in 60 minutes: 100→200→400→800.

Question 5

A data table shows soil pH at five field sites: 5.2, 6.1, 7.0, 7.8, 8.4. Corn yield (bushels/acre) at the same sites is: 88, 142, 160, 130, 95. Which pH produced the highest yield?

Accepted Answer

7.0

Answer

The site with pH 7.0 had the highest corn yield of 160 bushels/acre.

(CLT) Classical Learning Test Practice Test

(CLT) Classical Learning Test Practice Test

CLT Science Reasoning 3