Physical Science
This is the measure of how much space an object occupies.
A. Mass
B. Weight
C. Volume
D. Density
What is C: Volume?
Organisms that eat other organisms to get energy are called:
A. Producers
B. Consumers
C. Decomposers
D. Autotrophs
What is B: Consumers?
The movement of Earth around the Sun is called:
A. Revolution
B. Rotation
C. Orbit
D. Axis
What is A: Revolution?
Which term refers to the factor that is measured in an experiment?
A. Control
B. Independent variable
C. Dependent variable
D. Constant
What is C: Dependent variable?
This is an example of a Renewable Energy source.
A. Coal
B. Solar
C. Nuclear
D. Natural Gas
What is B. Solar?
Which of the following is a chemical change?
A. Ice melting
B. Water boiling
C. Iron rusting
D. Salt dissolving
What is C: Iron rusting?
What organelle in plant cells is responsible for photosynthesis?
A. Mitochondria
B. Nucleus
C. Cell membrane
D. Chloroplast
What is D: Chloroplast?
What is the primary cause of seasons on Earth?
A. Earth's distance from the Sun
B. Tilt of Earth's axis
C. Earth's shape
D. Moon’s gravity
What is B: Tilt of Earth’s axis?
What do scientists use to communicate patterns and relationships in data?
A. Hypothesis
B. Graphs
C. Procedures
D. Variables
What is B: Graphs?
Which of the following would most likely cause a hurricane to lose strength?
A. Moving into warmer ocean water
B. Increasing wind speed
C. Moving over land
D. Rotating faster
Answer: C. Moving over land
This force resists motion between two surfaces that are touching.
A. Friction
B. Gravity
C. Magnetism
D. Acceleration
What is A: Friction?
Which of the following shows the correct order of biological organization from smallest to largest?
A. Organ → Tissue → Cell
B. Cell → Organ → Tissue
C. Cell → Tissue → Organ
D. Tissue → Cell → Organ
What is C: Cell → Tissue → Organ?
Which of these is a sedimentary rock?
A. Granite
B. Limestone
C. Basalt
D. Marble
What is B: Limestone?
What is the purpose of a control group in an experiment?
A. To alter the outcome
B. To compare results
C. To test every variable
D. To produce errors
What is B: To compare results?
This process explains how clouds form in the atmosphere.
A. Warm air cools and water vapor condenses into droplets
B. Water freezes instantly at high altitudes
C. Water vapor condenses when it rises and cools
D. Sunlight directly turns water into ice
What is C: Water vapor condenses when it rises and cools?
A material that allows electricity to flow through it easily is called a:
A. Insulator
B. Conductor
C. Resistor
D. Transformer
What is B: Conductor?
Which group of organisms breaks down dead or decaying organisms?
A. Consumers
B. Decomposers
C. Producers
D. Herbivores
What is B: Decomposers?
Which celestial body is responsible for Earth's tides?
A. Sun
B. Moon
C. Jupiter
D. Mars
What is B: Moon?
In an experiment measuring plant growth (in cm), the results for 7 plants are:
5, 7, 7, 10, 12, 15, 20
What is the median growth of the plants?
A. 10
B. 8.5
C. 10
D. 12
What is C: 10?
A sudden drop in atmospheric pressure is most likely to indicate:
A. A heatwave
B. Clear skies
C. An approaching storm
D. Colder temperatures
Answer: C. An approaching storm?
This best explains why metals are good conductors of electricity.
A. They have tightly bound electrons
B. They have free-moving electrons in a "sea" of electrons
C. Their atoms are heavier
D. They have high resistance
What is B. They have free-moving electrons in a "sea" of electrons
This best describes the role of nitrogen-fixing bacteria in ecosystems.
A. They break down organic waste
B. They convert atmospheric nitrogen into forms plants can use
C. They recycle carbon dioxide
D. They produce oxygen during photosynthesis
What is B. They convert atmospheric nitrogen into forms plants can use?
What is the primary cause of Earth's magnetic field?
A. The Moon’s gravitational pull
B. Earth’s rotation on its axis
C. Movement of molten iron in Earth’s outer core
D. The presence of mountains
What is C. Movement of molten iron in Earth’s outer core?
This is what a scientist should do after getting different results in repeated trials of the same experiment.
A. Report the first result
B. Analyze potential sources of error and refine the procedure
C. Discard the hypothesis
D. Choose the best result and move on
What is B: Analyze potential sources of error and refine the procedure?
A scientist records the following temperatures (in °C) over five days:
18, 20, 22, 24, 26
What is the mean temperature for the five days?
A. 20
B. 22
C. 23
D. 24
What is B: 22?