Making Connections

Students were asked to design a lab that investigated the relationship between exercise and heart rate. Heart rate was determined by recording the pulse rate in beats per minute. The students hypothesized that increased exercise results in an increased heart rate. The class results for the experiment are shown in the graph.

Which statement is best supported by the graph?

• Before exercising, the average pulse rate was 65; four minutes after exercising, the average pulse rate was 65.

• After four minutes of exercising, the average pulse rate was 120; two minutes after exercising, the average pulse rate was 120.

• While exercising, the highest average pulse rate was 150; before exercising, the average pulse rate was 65.

• Two minutes before exercising, the average pulse rate was 80; after two minutes of exercise, the average pulse rate was 140

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State the relationship between intensity of physical activity and pulse rate.

• Running has the highest pulse rate

• Walking has the highest pulse rate

• Sitting has the highest pulse rate

• Physical activity does not affect pulse rate

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Which of the following best describes the concept of 'Making Connections' in the context of ecosystems?

• The process of photosynthesis in plants

• The interaction between different species and their environment

• The water cycle and its impact on climate

• The role of decomposers in nutrient cycling

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In a scientific experiment, making connections between variables is crucial. Which of the following represents a dependent variable in an experiment measuring plant growth?

• Amount of sunlight

• Type of soil

• Height of the plant

• Watering frequency

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NGSS.MS-LS1-5

How does making connections between neurons in the brain relate to learning and memory?

• It decreases the brain's ability to process information

• It strengthens the pathways for information retrieval

• It causes neurons to die off more quickly

• It has no effect on cognitive functions

Which scientific principle involves making connections between force, mass, and acceleration?

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

• Law of Conservation of Energy

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In the context of making connections in chemistry, what is the significance of covalent bonds?

• They involve the transfer of electrons between atoms

• They result in the formation of ions

• They involve the sharing of electron pairs between atoms

• They are weaker than hydrogen bonds

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Making connections between different scientific disciplines can lead to new discoveries. Which of the following is an example of interdisciplinary science?

• Studying the chemical composition of a single element

• Analyzing the impact of climate change on ocean currents

• Examining the structure of a single protein

• Investigating the gravitational pull of a planet

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Which of the following experiments best illustrates the concept of making connections in physics?

• Measuring the speed of light in a vacuum

• Observing the effects of gravity on a falling object

• Studying the relationship between voltage, current, and resistance

• Calculating the energy produced by a chemical reaction

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NGSS.HS-PS2-5

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Making connections between genetic information and physical traits is a key aspect of which scientific field?

• Ecology

• Genetics

• Geology

• Astronomy

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NGSS.HS-LS3-1

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