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Science Praxis 7814
Use Kathleen Jasper and practice tests
| Question | Answer |
|---|---|
| This type of rock is formed by heat and pressure | Metamorphic |
| A river flows through a canyon and picks up silt. That sediment and silt runs downstream and deposits where the river ends. When that material gets to the beach, it sits there. Over millions of years, ________________ form. | Sedimentary rocks |
| What causes Earth's magnetism? | The inner and outer core rotation |
| Mr. Lopez wants to conduct a DNA extraction lab but doesn't have the expensive materials necessary to complete the process. What can Mr. Lopez do to maximize the students' learning even though they can't physically do the lab? | Utilize a web-based virtual lab that can be projected onto a screen |
| A 2nd grade teacher wants students to implement the unifying processes of systems, order, and organization in a lesson on plants. Which of the following activities is the most appropriate? | Creating a diagram to show how plants use energy from the sun for photosynthesis |
| Control group | The group that does not receive the new treatment or change in an experiment. |
| Constant group | a group in an experiment that is kept the same throughout the study. |
| Independent variable | the one thing that is changed on purpose in an experiment |
| Dependent variable | what you measure or observe in an experiment |
| Hypothesis | an educated guess or prediction about what will happen in an experiment |
| As random genetic mutations occur within an organisms genetic code, the beneficial mutations are preserved because they aid survival. This is called: | Natural selection |
| When you push a box through the doorway you are using: | Mechanical energy |
| A teacher is showing her students how to calculate density by using displacement. What is the most appropriate tool to use in this strategy? | Graduated cylinder |
| A class grows bacteria in petri dishes. Three groups start with the same amount of bacteria. Students collect data on the number of spores at different temperatures. What is the independent variable? | The temperature |
| Students are studying genetics using punnet squares. They learn that in order for an offspring to display recessive traits, the offspring must inherit which of the following? | Only recessive alleles |
| Which of the following is an example of a formative assessment in a 5th grade science class? | Working on a unit for two weeks, observing student engagement and understanding and assessing students along the way to drive instructional decesions. |
| What would be an appropriate activity to do when using a thematic lesson incorporating both math and science? | Categorize different seeds based on shape and color |
| Mr. Shope’s students mix water, borax, and glue to make slime. They observe its properties, then decide whether it is a mixture or a new substance and support their claim with evidence from their observations. Which student displays the best answer? | Alyssa, who wrote that they had created a new substance because the slime has properties that are different form the properties of the three ingredients |
| A student misinterprets a graph on Earth’s water distribution, concluding there is little difference among freshwater sources. Which teacher suggestion would best help correct this misunderstanding? | Graph only the data for freshwater and set the y-axis range to go from 0 to 3 percent. |
| After a ball-rolling activity, a student claims objects stop when the initial force is used up. Which concept should the teacher focus on to correct this misunderstanding? | An object will continue moving at a constant velocity unless a force is exerted on it. |
| Students say a helium balloon rises and a rubber ball falls because one is light and the other heavy. Which demonstration would best challenge the misconception that only heavy objects fall? | Simultaneously releasing a helium-filled balloon and an identical, but uninflated, balloon |
| Students grew plants in sunny and non-sunny locations; after a break, some plants died. Which student plan would best collect data to determine why some plants survived and others did not? | Place new groups of plants in the original locations and water half of the plants in each group daily and water the other half weekly. |
| A student shows a food chain as mouse → snake → hawk. Which teacher feedback would best help correct the student’s misconception about how materials move in a food chain? | Asking him to show how the energy first entered his food chain |
| Students are researching the effects of pesticides and herbicides but found little online. Which two activities would best help them collect useful information? | Mr. Wilson can work with the librarian to access curated journals, newspapers, and books Schedule a panel with EPA, USDA, and extension service representatives to share resources and answer questions. |
| Kindergarteners cannot reach a wall fountain. Which two questions would best prompt discussion and help the class generate possible solutions? | Can the water fountain be moved? Is there enough space around the water fountain to place a step that people won't trip over? |