Print an 8-question GED Science worksheet with a separate answer and explanation section. The selected text questions work without a screen or an account.
Reason with experiments, evidence and scientific data. Selected foundations; check coverage for the full scope.
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8 original questionsSeparate explanationsBrowser print · Version r02
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A lab wants to know whether a starch coating reduces browning of fresh pear slices after 20 minutes. All slices came from the same batch.
The lab brushes one set with a water-and-starch mixture and scores browning after 20 minutes. Which comparison best isolates the starch?
Leave slices dry and score them after 10 minutes.
Brush slices with the same volume of water alone and score them after 20 minutes.
Brush slices with more of the starch mixture and score them after 20 minutes.
Brush a different fruit with water and score it after 20 minutes.
Read the answer and explanation
Answer: Brush slices with the same volume of water alone and score them after 20 minutes.
The treatment ingredient is starch.
The comparison needs the same handling, water exposure and scoring time while omitting starch.
Review the lesson QUESTION 2 · Read graph values before comparing change
A timer records two heating trials. At minute 0, trial R reads 20°C and S reads 25°C. At minute 3, R reads 32°C and S reads 31°C. At minute 6, R reads 38°C and S reads 37°C. The readings change continuously. What follows from the first two records?
Trial R was warmer throughout the first three minutes.
Trial S had cooled below its own starting temperature by minute 3.
The trials had equal temperatures at least once between minute 0 and minute 3.
The readings were equal exactly halfway between minutes 0 and 3.
Read the answer and explanation
Answer: The trials had equal temperatures at least once between minute 0 and minute 3.
R starts below S and is above S by minute 3.
With continuous temperature change, the difference must pass through zero at least once.
A stream gauge rises 6 centimeters in 30 minutes during one storm and 10 centimeters in 1 hour during another. Which comparison uses average rise per hour?
The second storm rises 4 cm per hour faster.
The first storm rises 6 cm per hour slower.
The average rise rates cannot be compared without both starting heights.
The first storm averages 12 cm per hour, which is 2 cm per hour faster.
Read the answer and explanation
Answer: The first storm averages 12 cm per hour, which is 2 cm per hour faster.
Thirty minutes is half an hour, so 6 ÷ 0.5 = 12 cm per hour.
A mushroom grower tries a new substrate. New-substrate trays sit by an air vent, while standard-substrate trays sit on a sheltered shelf. The new-substrate trays dry out faster. What change best tests whether substrate itself affects drying?
Put twice as many new-substrate trays by the vent.
Measure humidity only on the sheltered shelf.
Place matched trays of both substrates at each location and compare within each location.
Put the standard substrate by the vent and the new substrate on the shelf for a single comparison.
Read the answer and explanation
Answer: Place matched trays of both substrates at each location and compare within each location.
Airflow can affect drying and differs with substrate in the original setup.
Within each location, matched trays let the grower change substrate while holding the location fixed.
Two small model slopes receive the same rainfall, have equal area and incline, and begin dry. One is covered by a nonporous sheet and the other by loose soil. No edge losses occur. Which first observation supports more infiltration on the soil slope?
More water reaches the outlet from the loose soil slope.
Both slopes receive the same volume of rain.
Sensors below the soil surface become wetter while less water reaches its outlet.
Both outlets collect equal amounts and no subsurface reading is taken.
Read the answer and explanation
Answer: Sensors below the soil surface become wetter while less water reaches its outlet.
Infiltration means water enters the ground.
A subsurface moisture increase supplies evidence of that path, and the smaller outlet volume supports the comparison under the stated controls.
A survey records 14 pollinator visits per hour at flower beds beside one community garden, compared with 8 at nearby paved sites with pots. Counts were taken on four sunny mornings. Which summary stays within the evidence?
All pollinators visit planted beds more often in every season.
Replacing pavement caused exactly six additional visits each hour.
During the sampled mornings, observers counted more visits per hour at the garden beds.
The paved sites contain exactly eight individual pollinators.
Read the answer and explanation
Answer: During the sampled mornings, observers counted more visits per hour at the garden beds.
Identify the outcome as observed visits per hour and limit the claim to the sampled locations and mornings.
The observed difference supports a local comparison but leaves possible site and weather effects.
Review the lesson QUESTION 8 · Distinguish position, velocity and acceleration
A cart starts at position 2 m on a straight track, travels to 8 m, then returns to position 5 m. What are the cart’s total distance and displacement, respectively?
3 m and +9 m
6 m and +3 m
9 m and +3 m
9 m and −3 m
Read the answer and explanation
Answer: 9 m and +3 m
Distance adds the magnitudes of the two legs: 6 + 3 = 9 m.
Displacement is final minus initial position: 5 − 2 = +3 m.
Original foundation practice for selected skills across three science domains..
This fixed sample includes one question per selected skill before additional families. Questions requiring a separate diagram are excluded from this text worksheet. It is an untimed study resource with working space, rather than an official mock examination.
Author-reviewed learning materials. Independent educator review is pending; question difficulty has not been calibrated with learner results. Check coverage and gaps before planning your preparation.
Sources and preparation route
These prompts and explanations are the site's original learning materials. The reference links below support the selected skills; they are not endorsements or official examination questions.
