Title: ACT (Demo) / Science Reasoning
Tags: act demo science-reasoning

Question: A plant's height (cm) was 2, 5, 9, and 14 at weeks 1–4. Based on the trend, the best prediction for week 5 is:
Explanation: Gains grow by 3, 4, 5, so week 5 adds ~6: 14 + 6 = 20 cm.
Other fields (not shown on cards):
Choices: 15 cm
17 cm
20 cm
9 cm
Correct: C

Question: As temperature rose from 10°C to 30°C, a reaction's rate rose from 2 to 6 units. The relationship between temperature and rate is best described as:
Explanation: Both increase together, so the relationship is direct/positive.
Other fields (not shown on cards):
Choices: direct (positive)
inverse (negative)
no relationship
random
Correct: A

Question: Solution A has pH 3 and solution B has pH 6. Which is more acidic?
Explanation: Lower pH means more acidic, and 3 < 6.
Other fields (not shown on cards):
Choices: Solution A
Solution B
They are equally acidic
Neither is acidic
Correct: A

Question: A sample's mass and volume: 10 g occupies 5 cm³. What is its density?
Explanation: Density = mass/volume = 10/5 = 2 g/cm³.
Other fields (not shown on cards):
Choices: 0.5 g/cm³
2 g/cm³
5 g/cm³
15 g/cm³
Correct: B

Question: In an experiment, doubling quantity X always doubles quantity Y. X and Y are:
Explanation: A constant ratio (double-for-double) is direct proportionality.
Other fields (not shown on cards):
Choices: directly proportional
inversely proportional
unrelated
exponentially related
Correct: A

Question: In a drug study, the control group receives no drug. The control group's main purpose is to:
Explanation: A control establishes what happens without the treatment, as a comparison baseline.
Other fields (not shown on cards):
Choices: increase the dose
provide a baseline for comparison
speed up the study
guarantee a positive result
Correct: B