Judicial Branch — Unit test Answers
Which of these are physical changes in matter? Check all that apply.boiling watera pencil being sharpenedexploding dynamitefreezing waterrotting cheese
Which of these are chemical changes in matter? Check all that apply. mixing lemonade powder in waterbleaching your hairmowing the lawnlighting a matchletting fruit rot
Read the article Looking at Leaves and answer the question.What causes leaves to change color in the autumn? Is the change physical or chemical? Explain your answer.
Leaves change color because of the presence of different pigments: chlorophyll (green), carotenoid (yellow/orange), and anthocyanin (red). In autumn, trees stop producing chlorophyll due to less sunlight, which allows the other pigments to become visible. This is a chemical change because the chemical composition of the leaf is changing as chlorophyll breaks down and new pigments like anthocyanin are produced.
Which are examples of primary sources? Check all that apply.diarynewspaper articlebiographyphotographspeech
Kara is researching political parties in the United States. Which source is likely to contain the most relevant information for Kara’s research?
Which are functions of a search engine? Check all that apply.to create informational content for readers to accessto record data and make web address connectionsto retrieve information from websitesto create mathematical algorithmsto rank information in terms of relevance
Which is an example of a secondary source?
How does a search engine use algorithms to provide search results?
Which are examples of tertiary sources? Check all that apply.dictionarybiographywork of fictiontextbooknewspaper article
Which search results represent the most relevant sources?
Which example illustrates a chemical change?
To answer the research question "How am I going to find the information I need on the topic?” the best thing Georgia should do first is
Sample Response: Leaf color comes from three pigments: chlorophyll, carotenoid, and anthocyanin. Chlorophyll is the pigment that makes leaves green and allows plants to make their own food using sunlight, water, and carbon dioxide. In the autumn, trees stop producing chlorophyll because there is less sunlight available. This allows carotenoid to show through, making the leaves yellow, orange, and brown. This is an example of a chemical change. What did you include in your response? Check all tha
What is conserved in physical changes?
Sergio knows that to meet the project requirements, it is essential to have
The atoms in a sample are close together but can slide past one another. As the atoms lose energy, they move slower. The atoms become locked in place because of attractive forces between them.
Leon has made a long list of methods to use in conducting his research. He looks at his list and feels confused and overwhelmed.
Ella makes this table to organize her notes on whether atoms gain or lose energy during the changes of state.
What characteristics should a credible source have? Check all that apply.balancecertaintyreliabilitydoubttrustworthiness
Which type of organization has a website ending in .edu?
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