Digital ACT Practice Questions

A migratory songbird kept in total darkness would likely: Passage Excerpt (Natural Science): For over a century, the ability of migratory birds to navigate acro...

The primary focus of the passage is on describing the: Passage Excerpt (Natural Science): Unlike volcanic eruptions where lava flows from a central vent, the fo...

According to the passage, the direct trigger of the roof rock's collapse is: Passage Excerpt (Natural Science): Unlike volcanic eruptions where lava flows from ...

As it is used in the passage, the word "precipitously" most nearly means: Passage Excerpt (Natural Science): Unlike volcanic eruptions where lava flows from a c...

The simile comparing the collapsing roof rock to a "massive piston" emphasizes that the collapse: Passage Excerpt (Natural Science): Unlike volcanic eruptions w...

According to the passage, the playing technique known as kotekan involves: Passage Excerpt (Humanities): In the royal courts of Yogyakarta and Surakarta, the Ja...

Instruments from different gamelan ensembles cannot be interchanged primarily because: Passage Excerpt (Humanities): In the royal courts of Yogyakarta and Surak...

As it is used in the passage, the word "stratification" refers to: Passage Excerpt (Humanities): In the royal courts of Yogyakarta and Surakarta, the Javanese g...

Based on Table 1, as substrate concentration increases from 5 mM to 160 mM, the reaction velocity: Experiment Context (Enzyme Kinetics of Catalase): Researchers...

In this experiment, which of the following variables was held constant? Experiment Context (Enzyme Kinetics of Catalase): Researchers measured the initial react...

At substrate concentrations above 80 mM, the rate of increase in velocity slows primarily because: Experiment Context (Enzyme Kinetics of Catalase): Researchers...

Based on Table 2, Species Y is best classified as a: Experiment Context (Photoperiodic Induction of Flowering): Botanists exposed three varieties of plants (Spe...

Which species demonstrated flowering behavior completely independent of dark period length? Experiment Context (Photoperiodic Induction of Flowering): Botanists...

If a researcher briefly interrupts the 16-hour dark period of Species Y with a 5-minute flash of red light, Species Y will most likely: Experiment Context (Phot...

Based on Table 3, doubling the release height h from 0.20 m to 0.40 m causes the launch speed to: Experiment Context (Incline Ramp Velocity and Range): A steel ...

If a sphere were released from a height h = 1.60 m under identical conditions, the predicted horizontal range would be closest to: Experiment Context (Incline R...

The time required for the sphere to fall from the table edge to the floor depends exclusively on: Experiment Context (Incline Ramp Velocity and Range): A steel ...

Based on Table 4, the equivalence point of this titration occurred at: Experiment Context (Potentiometric Titration of Weak Acid): A 25.0 mL sample of 0.10 M ac...

At 12.5 mL of added NaOH (the half-equivalence point), the pH equals 4.76. This value represents the: Experiment Context (Potentiometric Titration of Weak Acid)...

Why is the pH at the equivalence point (25.0 mL NaOH) basic (pH = 8.72) rather than neutral (pH = 7.00)? Experiment Context (Potentiometric Titration of Weak Ac...

Based on Table 5, which soil sample has the highest hydraulic conductivity? Experiment Context (Hydraulic Conductivity of Soil Columns): Civil engineers packed ...

Which factor most directly explains why Soil Sample C permitted the lowest percolation volume? Experiment Context (Hydraulic Conductivity of Soil Columns): Civi...

If an engineer needs to line the bottom of a municipal landfill to prevent toxic leachate from seeping into aquifers, which soil type is best suited? Experiment...

Based on Table 6, which material causes the greatest degree of bending (refraction) of the laser beam? Experiment Context (Refraction of Monochromatic Light): S...