- Imagine that the US president's science advisor wants to perform a risk assessment of several scientific proposals before recommending which should be fully supported by federal funds. Which of the following steps should the advisor take first?A. interpreting the results of prior research associated with the proposalsB. identifying the problems that need solutionsC. predicting the likely outcomes of various research proposalsD. deciding which projects will best balance scientific endeavors and economic considerations
- A grasshopper feeds on a corn plant. The grasshopper is eaten by a chicken, which is then slaughtered and eaten by a farmer. To which trophic level does the grasshopper belong?A. tertiary consumerB. primary consumerC. secondary consumerD. apex predator
- After listening to a recording of a specific piece of music in class, a student writes the following:"This music was slow and made me feel tired. I heard a violin, a trumpet, and drums. There was a conductor at the front of the orchestra, and I heard the audience clap at the end. The audience was glad the song had finished."In a conferring session with the student, the teacher should encourage the student to make the following change to the reflection to convey proper music terminology:A. delete "and made me feel tired"B. change "conductor" to "composer"C. change "orchestra" to "symphonic band"D. change "slow" to "andante"
- An increase in carbon dioxide (CO2) emissions on Earth is thought to be responsible for which of the following?A. an increase in the size of the ozone hole over AntarcticaB. an increase in the amount of coral in Earth's oceansC. an increase in Earth's average temperaturesD. an increase in the size and number of solar flares
- Mr. Montague wants to help his students learn to model systems. To develop an appropriate lesson plan, he writes out the first few steps of modeling, shown below. After he completes the list of steps, he will simplify the instructions for his students.Step 1: List the parts and subsystems associated with the system.Step 2: Define the boundary of the system.Step 3: List how the parts of the system interact with each other.Step 4: ...Which of the following is the most likely fourth step in the list?A. Seek critique from others and publish the findings.B. Estimate the reliability of the model.C. List inputs and outputs to the system.D. C. List inputs and outputs to the system.
- Which of the following can be true of compressional waves with a high frequency?A. They are sound waves with a low pitch.B. They are light waves that are red in color.C. They are sound waves with a high pitch.D. They are electromagnetic waves.
- Students are asked to build rubber band cars that will travel long distances. After the students build and test the cars, the teacher asks the students to develop hypotheses about the effects of changes they might make to their cars.Which of the following questions would best encourage students to come up with scientifically testable hypotheses about possible changes?A. What about your car's design is similar to the design of a real car?B. What else could you use for energy storage in a car like this?C. How could you change your car to make it travel further?D. How can you decorate your car so it looks better than the other cars?
- Which statement does not accurately describe aspects of physical development?A. Students with special needs will not pass through all the physical development stages with their peers.B. While all students grow at slightly different rates, there are some major stages of development children pass through.C. Adolescence brings on rapid development.D. Both boys and girls may feel awkward and become sensitive and self-conscious about their changing or unchanging bodies.
- Mrs. Jennings is planning a hygiene unit for her kindergarten class. Which of the following is the most appropriate lesson topic for students at this level?A. body odorB. face washingC. hand washingD. degreasing hair
- Which of the following scenarios is not an example of maintaining homeostasis?A. SweatingB. Verbal communicationC. Drinking a glass of waterD. Breathing
- During a fission reaction in a power plant uranium atoms break apart and emit energy used to make steam. Which of the following energy transformations takes place during this process?A. chemical energy to mechanical energyB. mechanical energy to electrical energyC. nuclear energy to thermal energyD. electrical energy to nuclear energy
- Which of the following is the furthest planet from the sun?A. NeptuneB. PlutoC. MercuryD. Earth
- Albinism (lack of pigmentation) in an organism is most likely the result of which of the following?A. infectionB. survival of the fittestC. adaptationD. mutation
- Ms. Jones assigns her students a task in which they must act out a play with students representing color-coded chromosomes. The play must illustrate the process of crossing-over, and show the resulting cells having different color combinations than the parents to show that they are genetically different. This would be a good activity for students to learn about which topic?A. differentiationB. speciationC. asexual reproductionD. sexual reproduction
- Which of the following best accounts for day and night on Earth?A. the Earth's rotation on its axisB. the shadow of the Moon on the EarthC. the Moon's orbit around the EarthD. the Earth's orbit around the Sun
- Mr. Zeno has prepared mixtures of sand and pebbles. He divides his students into groups and tells them they are teams of geologists with a task of separating a mixture. Which of the following activities would best help students learn the process of doing science?A. Give each group a specific but different tool and show each group how to use it. Have a class discussion afterward about which tool worked best.B. Give every group a wire mesh and show them how to use it. Give students a grade based on how well they seperate the two materials.C. Demonstrate how to separate the mixture using various tools, then have students write a paragraph explaining how to separate a mixture of sand and gravel.D. Have many different tools available for students use, including tweezers and a wire mesh. Briefly explain how to use each tool. Encourage the groups to decide how to complete the task.
- Quartz can be classified as which of the following?A. metamorphic rockB. mineralC. igneous rockD. sedimentary rock
- A beaker is best used for which of the following measurements?A. very small sample size of liquidB. large sample size of liquidC. circumference of a regularly-shaped objectD. a medium amount of powder
- Black colored fur is dominant over white colored fur in hamsters. A black colored hamster (Bb) is mated with a purebred, white colored hamster (bb). What percentage of their offspring will have the genotype Bb?A. 100%B. 50%C. 75%D. 25%
- After a completed lesson on reflection, Ms. Zoya looks at herself in a hand-held mirror, smiling and commenting on her reflection. She then tries to look at her image in a piece of white paper and acts puzzled because she cannot see herself. She asks students why she can see herself in a mirror but not in the paper, writes their theories on the board, and asks for ideas on how to test their theories. What concept about light is Ms. Zoya most likely using as she teaches the science process of experimental design?A. the electromagnetic spectrumB. specular and diffuse reflectionC. refractionD. the reason for color