- Which of the following is not true of compounds?A. They cannot contain more than one element.B. They can be molecules.C. They are always classified as pure substances.D. They can contain only one bond.
- Which of the following scientists won two Nobel Prizes, one in physics and one in chemistry, and discovered the elements Radium and Polonium?A. Marie CurieB. Rosalind FranklinC. Dmitri MendeleevD. Antoine Lavoisier
- After reading a story about a world that runs out of natural resources, a second-grade teacher wants students to think deeply about what they could do to prevent this in our world. Which of the following activities best supports critical thinking and relates to the lesson goal?A. Have each student draw posters to encourage recycling at the school and then tape the posters up in the school hallways.B. Have small groups of students discuss and evaluate their own thoughts about what they could do personally to conserve resources.C. Have students watch a movie about how plastics are recycled and fill in a worksheet about the process.D. Have students look for and pick up litter from the playground and nearby park.
- Mr. Reynolds is working through a unit on healthy lifestyles. He wants to incorporate the leading cause of preventable death in the United States. Which of the following causes of death should Mr. Reynolds use?A. tobacco useB. sexually transmitted diseasesC. infectious diseasesD. texting while driving
- Which of the following terms would most likely be used in a lesson about Galileo?A. conquistadoresB. hieroglyphicsC. indentured servantsD. heliocentricity
- Which of the following substances would be attracted to a magnet?A. a copper panB. a gold earringC. a ball of aluminum foilD. a steel paperclip
- A first-grade teacher is creating a science center based on the following TEKS.(2) Scientific investigation and reasoning. The student develops abilities to ask questions and seek answers in classroom and outdoor investigations. The student is expected to:(A) ask questions about organisms, objects, and events observed in the natural world;(B) plan and conduct simple descriptive investigations;(C) collect data and make observations using simple tools;(D) record and organize data using pictures, numbers, and words; and(E) communicate observations and provide reasons for explanations using student-generated data from simple descriptive investigations.She builds a leaf rubbing center with 5 different kinds of leaves. The students can view the leaves under a microscope and use various other tools to conduct observations. Which phase of the 5-E model is this center demonstrating?A. explanationB. exploration
- How long does it take for the earth to make one complete rotation on its axis?A. About 24 hoursB. About 1 monthC. About 1 yearD. About 12 hours
- Which of the following best explains why a large volcanic eruption decreases the average temperature of a region for several years after the eruption?A. Expelled ash and dust block solar radiation.B. Lava destroys vegetation that surrounds the volcano.C. Warm magma from inside the Earth cools quickly above ground.D. Dark-colored lava covers large areas after an eruption.
- Casey is playing with her yo-yo. She performs an "around the world" trick, in which the yo-yo travels up and around in a circle before returning to her hand. At which point in its circular path would the yo-yo have the least potential energy?A. when the yo-yo is at the rear-most point of its circular pathB. when the yo-yo is at the bottom of its circular pathC. when the yo-yo is at the top of its circular pathD. when the yo-yo is at the forward-most point of its circular path
- Which of the following can be attributed to active geothermal activity?A. GlaciersB. WaterfallsC. RiversD. Geysers
- An equatorial air mass that originates over land would most likely be described as:A. warm and humid.B. warm and dry.C. cold and humid.D. cold and dry.
- Ms. Mendez wants her students to practice process skills during a unit on the rise of mammals after the dinosaur extinction. Which of the following activities best helps students practice the process skill of communicating?A. grouping mammals that flourished at that time by sizeB. using evidence to develop their own theories about why mammals did so well at that timeC. using evidence to explain why mammals thrived at that timeD. listing which animals would flourish today if local predators died out
- After studying a fairy tale, a teacher plans a performance-based assessment to determine the students' understanding of the plot, setting, and characters. Which theatre-performance-based assessment will give the teacher the best evidence to determine student mastery of the expected components?A. Students can draw their favorite scene from the fairy tale and include speech bubbles in the drawing.B. Students can participate in improvisational role-playing based on the characters from the story.C. Students can perform the readers theatre version of the story.D. Students can create and sing a song about the play.
- Which of the following is the largest structure within a snake?A. cellB. tissueC. organD. organ system
- Which of the following correctly lists the primary function of the leaves of a plant?A. gas exchange and photosynthesisB. structure and stability of the shootC. facilitating reproductionD. nutrient absorption from the soil
- A 5th-grade teacher provides models of various visuals that her students can incorporate into their research presentations. Which of the following would most reasonably be visually represented by a flow chart?A. the increase in local recycling over the past 10 yearsB. the various ways technology supports learning in their schoolC. comparing the number of kids who bring their lunch to the number of kids who buy their lunch at schoolD. the process of completing phone calls in the first year following the invention of the telephone
- 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.
- Students in a first-grade class are learning which colors result when primary colors are combined. Which of the following is the most effective way to assess student understanding of the concept?A. having students evaluate a movie that shows how different colors are printed in a magazineB. having students select and combine primary colors of clay to make specified secondary colorsC. asking students to name their favorite color and explain why it is their favoriteD. having students explain why combining primary colors produces certain secondary colors
- 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