- Which macromolecule provides long-term energy storage and insulation?A. carbohydratesB. lipidsC. proteinsD. nucleic acids
- The earth is divided into four distinct layers. Which layer is composed of very hot, liquid material?A. mantleB. outer coreC. crustD. inner core
- Global weather patterns or short-term climatic changes can be impacted by which of the following?A. changes in star patterns and constellationsB. changes in global winds and ocean currentsC. changes in local winds and air pressureD. changes in riverbanks and small landforms
- A student measures the volume of 12.8 ml of liquid with a graduated cylinder, checking the measurement three times to obtain volumes of 13.2 ml, 13.2 ml, and 13.1 ml. The student's measurements are:A. both precise and accurate.B. accurate but not precise.C. neither accurate nor precise.D. precise but not accurate.
- Pressures driving natural selection include all of the following EXCEPT:A. predator-prey relationshipsB. equal populations of all organismsC.available resourcesD. climate change
- Which of the following is not a major component of the earth's atmosphere?A. FluorineB. OxygenC. NitrogenD. Carbon dioxide
- Which of the following body systems is responsible for taking in oxygen and expelling carbon dioxide?A. respiratory systemB. digestive systemC. circulatory systemD. lymphatic system
- Having students create three-dimensional models of a generic animal cell would be most suited for teaching which of the following biological concepts?A. cell divisionB. cell differentiationC. cell organelle structureD. functions of types of cells
- Mrs. Conner wants to pre-assess the class regarding their knowledge of the periodic table of elements, inquire about their interest in the subject, then follow up with what students have learned. Which of the following formative assessment tools would be a good choice for Mrs. Conner?A. T-ChartB. K-W-L chartC. Concept MapD. Venn Diagram
- In the water cycle, energy from the sun heats the water, changing the liquid water into a gas. It loses energy and falls back to Earth. Which step in the water cycle is this?A. runoffB. evaporationC. precipitationD. condensation
- A student is struggling to differentiate between artificial selection and natural selection. Which of the following interventions would best help this student?A. Asking students to pair up and create a Venn diagram of artificial selection and natural selection together.B. Having students re-read the textbook section over artificial selection and natural selection and write three sentences about it.C. Giving students a copy of the notes about the two types of selection.D. Asking students to make a list of organisms that experience natural selection and organisms that experience artificial selection.
- Ticks are mites that attach themselves to animals, such as dogs, and suck blood. In doing so, ticks transmit diseases, such as Lyme disease, to the animals. Which type of interaction does this describe?A. mutualismB. neutralismC. commensalismD. parasitism
- As a demonstration during a unit on plate tectonics, a teacher holds an aluminum pie plate over a smoky candle and has the students observe how the smoke spreads and moves around and over the edges of the plate. Which of the following is demonstrated by the movement of the smoke?A. convectionB. radiationC. condensationD. conduction
- A polar air mass that originates over land would most likely be described as:A. warm and humid.B. cold and humid.C. cold and dry.D. warm and dry.
- Sally would like to measure the volume of liquid water produced by a reaction. Which of the following tools would be most appropriate for her to use?A. Triple beam balanceB. Metric rulerC. Graduated cylinderD. Beaker
- Students perform an investigation to compare the relative specific heats of sand, water, and soil. They fill plastic cups with the same mass of each material, place a temperature probe in each sample, and put the samples the same distance beneath identical flood lamps. Students record temperature data for 2 minutes while the lamps are on, and continue recording data for 1 minute after the lamps are turned off. Which of the following is the dependent variable in this experiment?A. the mass of the materialsB. the change in temperature of the materialsC. the amount of time the lamps are turned on and offD. the different materials
- Which quality would a scientist be measuring if he were using an anemometer?A. rainfallB. humidityC. wind speedD. atmospheric pressure
- A basketball player holds a basketball, ready to jump and shoot the ball. The player jumps in the air and shoots the ball toward the basket. Which of the following energy transformations occurs to power the player's jump shot?A. thermal energy to sound energyB. chemical energy to kinetic energyC. light energy to thermal energyD. mechanical energy to electrical energy
- During a lesson on waves, Ms. Chavez asks her students to stand side-by-side in a long line and link elbows. She asks them to be ready to squat when someone tugs their elbow down and stand back up when someone tugs their elbow up. Ms. Chavez goes to one end of the line, links elbows, squats and stands back up. As she squats, she naturally tugs downward on the elbow of the student next to her, who then tugs downward on the next student and so on. As she stands again she naturally tugs upward on the student next to her, and the signal moves down the line. The result is a wave that starts with Ms. Chavez and travels down the line of students. Each student squats and stands as the wave passes.Which of the following concepts about waves is Ms. Chavez most likely trying to teach?A. the nature of a wavelengthB. the nature of a transverse waveC. the nature of a longitudinal waveD. the nature of a sound wave
- During a unit on organisms and environments, Mr. Woodland wants his second-grade students to identify factors in the environment that affect plant growth. Students design investigations that involve growing bean plants in paper cups and exposing the plants to environmental variables of their choice. After the beans sprout, the students measure and record the heights of their bean plants. At the end of the investigation, students will be asked to present their data in a way that will be quick and easy to understand. Which of the following is the best way to incorporate technology into this lesson?A. Have students record and graph their data in a spreadsheet that they can access each time they make a measurement.B. Have students search the internet to help them figure out which environmental variables they can change and control.