Light and EM spectrum
Heat and Energy
Genetics and Evolution
Rock Cycle, Plate Tectonics, and Earth's Age
Nature of Science
100
Which of the following is a type of energy that reaches the Earth from the Sun?
A. visible light
B. infrared light
C. ultraviolet light
D. all of these
D. all of these
100
A flashlight produces light using energy from the batteries. In which order does the energy change form?
A. from light to electric to chemical energy
B. from electric to chemical to light energy
C. from chemical to electric to light energy
D. from electric to light to chemical energy
C. from chemical to electric to light energy
100
Small differences between parents and offspring accumulate over time. This process
A. makes it impossible for species to adapt to changes in their environment.
B. results in only one type of organism that has the exact same characteristics as its ancestors.
C. results in many different types of organisms with different characteristics from their ancestors.
D. prevents parents from being able to care for their offspring.
C.
results in many different types of organisms with different characteristics from their ancestors.
100
The two most abundant elements in Earth's core are
A. silicon and oxygen
B. nickel and silicon
C. iron and nickel
D. iron and magnesium
C. iron and nickel
100
Scientific inquiries typically begin with the formulation of a testable question. Then, experiments are designed, and data is collected and evaluated. Once the evaluation is complete, what should be done with the evaluation?
A. It should be used to refute scientific laws.
B. It should be communicated to other scientists.
C. It should be hidden in a drawer.
D. It should be changed to better align with the scientist's original predictions.
B. It should be communicated to other scientists.
200
Derick plays the trombone in band class, and he can hit a perfect "A note," according to his teacher.
Derick can hit an "A note" by blowing very soft, or by blowing very hard. By changing how hard he blows into the trombone, Derick is changing how loud the note is. Which property of waves is he changing when he changes how loud the "A note" is?
A. wavelength
B. frequency
C. direction
D. amplitude
D. amplitude
200
How is sound energy produced?
A. by vibrating objects
B. by stationary objects
C. by objects being heated
D. by temperature differences
A.
by vibrating objects
200
There are approximately 200 species of mice that live all over the world. Deer mice are a particular species of mice that prefer to live in forests, prairies, and fields. It has been observed that deer mice that live in trees tend to have longer tails because they use their tails for balance. Deer mice that live in prairies and fields tend to have shorter tails so they are less likely to be caught when running away from predators.
If a forest fire occurred in an ecosystem, eliminating the majority of the trees and short-tailed mice are naturally selected over short-tailed mice, the evolution of the mice can be primarily attributed to
A. human impact.
B. environmental factors.
C. genetic engineering.
D. selective breeding.
B. environmental factors.
200
What is the name for the process of recycling materials that make up the Earth's crust and mantle?
A.
the rock cycle
B.
the water cycle
C.
the nitrogen cycle
D.
the carbon cycle
A.
the rock cycle
200
There are many different types of scientific investigations. Which of the following forms requires the identification and control of variables?
A. observational field studies
B. model-building
C. laboratory experiments
D. collection of specimens
C. laboratory experiments
300
Waves interact with different surfaces in different ways. Waves often bounce off objects such as water. What is this form of wave movement called?
A.
refraction
B.
resonance
C.
reflection
D.
interference
C. Reflection
300
Energy stored in the bonds that hold together the atoms and molecules of all substances is called
A. electrical energy.
B. chemical energy.
C. kinetic energy.
D. mechanical energy.
Reset
B. chemical energy.
300
If the environment changes quickly and no individual members of a species are able to survive in the new environment, then the species will
A. begin mating with other species.
B. not be affected.
C. become extinct.
D. turn into a different species.
C. become extinct.
300
The main agents that cause metamorphic rocks to form are
A. heat and pressure.
B. weathering and erosion.
C. deposition and compaction.
D. melting and cooling.
A. heat and pressure.
300
Which of the following are included in scientific processes, methods, and knowledge as a result of science being a human endeavor?
A.
subjectivity
B.
creativity
C.
discovery
D.
all of these
D.
all of these
400
Which of the following word pairs correctly completes the sentence below?
The _______ energy from the _______ arrives in the form of visible and invisible light.
A.
Sun's, Earth
B.
Moon's, Earth
C.
Earth's, Sun
D.
stars', Moon
C.
Earth's, Sun
400
The electric pencil sharpener in Mrs. Brown's classroom gets very warm on days when many students need to sharpen their pencils.
Choose the form of energy to fill in the blank in the energy conversion diagram below.
Electrical Energy 
____________________ Heat Energy
____________________ Heat Energy A. Chemical Energy
B. Nuclear Energy
C. Mechanical Energy
D. Light Energy
C. Mechanical Energy
400
Coyotes primarily feed on small mammals, such as rabbits, squirrels, birds, and mice. Many of these prey try to escape from coyotes by burrowing into the ground. Which of the following characteristics is most likely to be naturally selected to increase a coyote population's chances for survival over time?
A.
smaller ears that are less sensitive to noise
B.
lighter colored fur that reflects light
C.
sharper claws that aid in digging
D.
blunt teeth that can be used for grinding
c. sharper claws that aid in digging
400
Rocks in the Earth's mantle contain a higher percentage of _______ and _______ than do rocks in the Earth's crust.
A. magnesium and oxygen
B. silicon and oxygen
C. iron and magnesium
D. iron and silicon
C. iron and magnesium
400
George is interested in insects and wants to do an experiment. Which of the following is a scientific question about insects that he could investigate with an experiment?
A. Do different food types affect the growth rate of beetles?
B. Why are there so many different kinds of insects in the world?
C. Are ladybugs prettier than beetles?
D. Do ants feel anxiety?
A. Do different food types affect the growth rate of beetles?
500
A _______ is a repeating disturbance or vibration that transfers or moves energy from place to place without transporting mass.
A. force
B. medium
C. vacuum
D. wave
D.
wave
500
Two beakers of water and their starting conditions are shown below.
How will the temperatures of the water in the beakers compare if an equal amount of heat is absorbed by each beaker of water?
A. The temperature of beaker A's water will remain 75°C, and the temperature of Beaker B's water will be above 75°C.
B. The temperatures of both beakers' water will increase by the same amount.
C. The temperature of beaker B's water will remain 75°C, and the temperature of beaker A's water will be above 75°C.
D. The temperatures of both beakers' water will decrease by the same amount.
B. The temperatures of both beakers' water will increase by the same amount.
500
Which of the following is true about natural selection?
A. Natural selection does not cause a species to change.
B. Natural selection is the only cause of changes in a species.
C. Natural selection usually causes a species to change suddenly.
D. Natural selection usually causes a species to change gradually.
D. Natural selection usually causes a species to change gradually.
500
The Earth's core is made of two parts - the inner and outer core. The inner core is made mostly of
A. nonmetallic gas.
B. solid metal.
C. liquid metal.
D. nonmetallic liquid.
B.
solid metal.
500
Scientific theories are explanations for naturally occurring events or phenomena. Although scientific theories require extensive observations and experimentation, they can change over time as new evidence is discovered.
Scientific laws are principles that are also based on extensive observations and experimentation. Although scientific theories can develop into laws, a theory can only be declared a law if it is proven to be without exception under certain stated conditions.
Which of the following is true regarding scientific theories,laws, and knowledge?
A. Scientific theories and laws develop from the acquisition of scientific knowledge.
B. Scientific knowledge must be proven by both scientific theories and laws.
C. Scientific theories can lead to scientific knowledge, but scientific theories are not related to scientific knowledge.
D. New scientific knowledge is gained by memorizing scientific theories and laws.
A.
Scientific theories and laws develop from the acquisition of scientific knowledge.