Science Project Quiz
Questions: 16 · 10 minutes
1. Which statement is a hypothesis that can be tested directly?
Salt has many interesting chemical properties.
If salt concentration increases, then radish seed germination will decrease over seven days.
Radishes are better project subjects than beans.
Scientists should study how plants respond to their surroundings.
2. Which question is most suitable for a controlled science project?
How does water temperature affect the time needed for sugar to dissolve?
Why is water important to every living thing?
What are all the ways people use sugar?
Is chemistry the most interesting kind of science?
3. A student predicts that fertilizer will increase plant height. Fertilized plants average 12.1 cm, while untreated plants average 12.4 cm under the same conditions. Which conclusion best matches the data?
The fertilizer definitely prevents plant growth
These results do not support the prediction that the fertilizer increases height
The experiment failed because the two averages differ
The hypothesis is correct because fertilizer was applied
4. A student investigates whether water temperature changes dissolving time. Which condition should be kept constant for a fair comparison?
The temperature of the water
The amount and type of solute used in each trial
The dissolving time recorded in each trial
The final pattern shown by the results
5. A paper airplane travels 4.2 meters in one trial. What should the student do before claiming this is its typical flight distance?
Round the result to 4 meters and report it
Compare it with the longest flight found online
Repeat the flight several times under the same conditions
Change the airplane design immediately
6. Another student wants to repeat a project exactly. Which report feature would help most?
A detailed procedure with materials, quantities, conditions, and measurement methods
A confident statement that the project was successful
A list containing only the final averages
A colorful display with large photographs
7. Before using a household chemical in a science project, what should a student do first?
Mix it with another substance to see whether it reacts
Test a small amount by smelling it closely
Assume it is safe because it is used at home
Review its hazards and handling instructions and obtain appropriate adult guidance
8. A student graphs hours of light per day against plant height after two weeks. Where should plant height usually appear?
In the graph title only
On the horizontal x-axis because it was measured last
On the vertical y-axis because it is the dependent variable
In the legend because it changed during the project
9. In an experiment testing how ramp height affects the distance a toy car travels, what is the independent variable?
The distance traveled by the car
The toy car used in every trial
The surface on which distance is measured
The height of the ramp
10. Two partners time the same pendulum, but one starts the timer at release while the other starts after the first swing. What is the best improvement?
Choose one clear timing rule and use it for every trial
Average their results without changing the procedure
Let each partner use whichever method feels easier
Keep only the shorter recorded times
11. A seed-germination project uses only one seed at each temperature. Why would using several seeds at each temperature improve the project?
It would guarantee that the hypothesis is supported
It would eliminate the need to control light and water
It would reduce the influence of unusual results from a single seed
It would turn temperature into the dependent variable
12. Five repeated measurements are 10.1, 10.2, 10.0, 15.8, and 10.1 cm. What is the most appropriate response to the 15.8 cm result?
Delete it automatically because it differs from the others
Check for a measurement or recording error and report any justified decision
Replace it with 10.1 cm before recording the data
Use it alone because it is the largest measurement
13. What information belongs in a concise science project abstract?
The question, basic method, main results, and conclusion
Every raw measurement and every source consulted
Only the original hypothesis and project title
A detailed diary of the student's work sessions
14. A team designs an insulated container to keep water warm. Which test gives the clearest evidence about whether the design works?
Asking classmates whether the container looks well insulated
Measuring the water only when it is poured into the container
Listing the insulating materials without testing the container
Comparing temperature change over equal times with a standard container
15. Which source is generally most useful for supporting the scientific background of a project?
An advertisement from a company selling the tested product
A general opinion poll about the topic
An unsourced social media post describing one person's experience
A relevant article from a reputable scientific or educational institution
16. A student tests whether a new fertilizer affects bean plant growth. Which group should serve as the control group?
Plants given twice the recommended amount of fertilizer
Plants placed in a different room and given no water
Plants grown the same way but given no fertilizer
Plants of another species given the fertilizer