Scientific Method
A scientist notices that a metal object becomes rusty after being left outside. What part of the scientific process is this?
A. Conclusion
B. Observation
C. Hypothesis
D. Experiment
B- observation
Which is the SI unit for time?
A. Hour
B. Minute
C. Second
D. Day
C. Second
Which subatomic particle has a positive charge?
A. Electron
B. Neutron
C. Proton
D. Photon
C. Proton
Which scientist is famous for improving the telescope?
A. Newton
B. Archimedes
C. Aristotle
D. Galileo
D. Galileo
A rectangle is 12 cm long and 5 cm wide. What is its area?
A. 17 cm²
B. 34 cm²
C. 60 cm²
D. 120 cm²
C. 60 cm²
A student predicts that plants will grow taller when given more sunlight. What is this prediction called?
A. Constant
B. Data
C. Hypothesis
D. Conclusion
C. Hypothesis
How many centimeters are in 1 meter?
A. 10
B. 100
C. 1,000
D. 0.1
B. 100
Which property describes the amount of space an object occupies?
A. Volume
B. Density
C. Mass
D. Weight
A. Volume
Who developed the three famous laws of motion?
A. Newton
B. Plato
C. Archimedes
D. Enheduanna
A. Newton
A triangular sign has a base of 8 m and a height of 5 m. What is its area?
A. 13 m²
B. 20 m²
C. 40 m²
D. 80 m²
B. 20 m²
A student wants to test whether fertilizer affects plant growth. Which should be the independent variable?
A. Plant height
B. Amount of fertilizer
C. Amount of soil
D. Type of plant
B. Amount of fertilizer
Which measurement would be most appropriate for the distance between two cities?
A. Millimeter
B. Centimeter
C. Meter
D. Kilometer
D — Kilometer
Which statement correctly describes a liquid?
A. It has a fixed shape and fixed volume
B. It has no fixed shape but has a fixed volume
C. It has a fixed shape but no fixed volume
D. It has no fixed shape and no fixed volume
B. It has no fixed shape but has a fixed volume
Which ancient woman is associated with being one of the earliest known astronomers?
A. Marie Curie
B. Enhe du'anna
C. Rosalind Franklin
D. Ada Lovelace
B. Enhe du'anna
A box measures 4 cm × 5 cm × 8 cm. What is its volume?
A. 17 cm³
B. 40 cm³
C. 160 cm³
D. 320 cm³
C. 160 cm³
A student tests the effect of temperature on plant growth. Five plants are given different temperatures, but the student gives each plant a different amount of water too. What is the problem?
A. There are no variables
B. There are too many dependent variables
C. More than one factor is being changed
D. There are too many observations
C — More than one factor is being changed
A student needs to measure 36 mL of water accurately. Which tool would be most appropriate?
A. Balance
B. Meterstick
C. Graduated cylinder
D. Thermometer
C. Graduated cylinder
Object A and Object B have the same volume. Object A has more mass. Which object has the greater density?
A. Object A
B. Object B
C. They have the same density
D. There isn't enough information
A. Object A
Archimedes investigated whether a crown was made of pure gold. Which property was especially useful in comparing the crown with gold?
A. Temperature
B. Density
C. Time
D. Color
B. Density
Which equation represents Planck's relationship between energy and frequency?
A. F = ma
B. E = mc²
C. E = hf
D. V = IR
C. E = hf
A scientist's results do NOT support the original hypothesis. What is the most appropriate next step?
A. Change the data so it supports the hypothesis
B. Ignore the experiment
C. Report the results and use them to form a new explanation or hypothesis
D. Automatically conclude the experiment was useless
C. Report the results and use them to form a new explanation or hypothesis
A student measures water in a graduated cylinder but views the liquid from above instead of at eye level. What is most likely to happen?
A. The mass changes
B. The measurement may be inaccurate
C. The density changes
D. The water evaporates
B. The measurement may be inaccurate
Two objects have the same mass. Object X takes up less space than Object Y. Which statement is correct?
A. Object X has a lower density
B. Object X has a greater density
C. Both objects have the same density
D. Density cannot be related to mass and volume
B. Object X has a greater density
Why was Archimedes' water-displacement method useful when investigating the crown?
A. It allowed him to determine the crown's volume without changing its shape
B. It allowed him to measure the crown's temperature
C. It turned the crown into a liquid
D. It measured the crown's mass directly
A. It allowed him to determine the crown's volume without changing its shape
A rectangular block has a mass of 240 g and a volume of 80 cm³. What is its density?
A. 0.33 g/cm³
B. 3 g/cm³
C. 160 g/cm³
D. 320 g/cm³
B. 3 g/cm³