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Multiple select📘 MS-PS2-1🧠 DOK 3

Question:

Two skateboarders, Alex and Jamie, are on a smooth, level surface. Alex pushes against Jamie, causing both of them to move in opposite directions. Which of the following statements correctly apply Newton's Third Law to describe the motion of Alex and Jamie? Select all that apply.

Answer Choices:

  • A) A. Alex exerts a force on Jamie, and Jamie exerts an equal and opposite force on Alex.
  • B) B. The forces exerted by Alex and Jamie are unequal because Alex is stronger.
  • C) C. Both skateboarders move in the same direction after the push.
  • D) D. The force exerted by Alex on Jamie is equal in magnitude and opposite in direction to the force exerted by Jamie on Alex.
  • E) E. Neither skateboarder exerts any force on the other.
✅ Answer:
A, D

💡 Explanation:

  • According to Newton's Third Law, for every action, there is an equal and opposite reaction.
  • When Alex pushes on Jamie, Jamie pushes back with an equal and opposite force.
  • This causes them to move in opposite directions, demonstrating the law of action and reaction.

Standard: MS-PS2-1 | DOK: 3

Recent Questions

Dropdown📘 W.IW.7.2.a🧠 DOK 4
Climate change is a significant global issue characterized by long-term shifts in temperatures and weather patterns. These changes can result from natural processes, such as variations in the solar cycle, but in recent decades, human activities have been the primary driver. The burning of fossil fuels, deforestation, and industrial processes increase the concentration of greenhouse gases in the atmosphere, leading to global warming. As a result, we observe melting glaciers, rising sea levels, and more extreme weather events, which threaten biodiversity and human societies.

Question:

What is the primary driver of the climate changes mentioned in the passage?

Answer Choices:

  • A) Natural processes
  • B) Human activities
  • C) Solar cycle variations
  • D) Biodiversity loss
✅ Answer:
Human activities

💡 Explanation:

  • The passage clearly states that in recent decades, human activities have been the primary driver of climate change, as they increase the concentration of greenhouse gases in the atmosphere, leading to global warming.

Standard: W.IW.7.2.a | DOK: 4

Multiple choice📘 MS-LS4-6🧠 DOK 3

Question:

A group of scientists observed a population of beetles over several generations. Initially, the beetles had a wide range of shell colors from light to dark. Over time, they noticed that the population had more dark-colored beetles than light-colored ones. Which of the following best explains how natural selection could have led to this change in the population?

Answer Choices:

  • A) A. Dark-colored beetles are more attractive to mates, so they reproduced more frequently.
  • B) B. Predators could see the light-colored beetles more easily on the dark forest floor, so more dark-colored beetles survived and reproduced.
  • C) C. Dark-colored beetles lived longer than light-colored beetles, allowing them more time to reproduce.
  • D) D. Light-colored beetles migrated to a different area, leaving only dark-colored beetles in the original population.
✅ Answer:
B

💡 Explanation:

  • Natural selection can lead to changes in a population if certain traits provide a survival advantage.
  • In this case, dark-colored beetles were less visible to predators on the dark forest floor, increasing their chances of survival and reproduction.
  • Over time, this led to an increase in the frequency of the dark-colored trait within the population.

Standard: MS-LS4-6 | DOK: 3

Short Answer📘 6.1.8.GeoSV.4.a🧠 DOK 3

Question:

Explain the impact of territorial expansion on Native American tribes during the 19th century. Highlight at least two specific examples of conflicts or resettlements and describe their outcomes.

✅ Answer:
Territorial expansion during the 19th century had significant impacts on Native American tribes, leading to numerous conflicts and forced resettlements. One example is the Trail of Tears, where the Cherokee Nation was forcibly removed from their ancestral lands in Georgia and relocated to Oklahoma, resulting in the death of thousands due to harsh conditions. Another example is the Battle of Little Bighorn, where the Sioux and Cheyenne tribes successfully resisted U.S. military forces, temporarily halting expansion into their territories. However, despite such victories, most Native American tribes were eventually forced onto reservations, losing their traditional lands and ways of life.

💡 Explanation:

  • This question requires students to analyze how U.S.
  • territorial expansion affected Native American tribes, focusing on specific historical events.
  • By providing examples like the Trail of Tears and the Battle of Little Bighorn, students demonstrate understanding of the complex interactions and consequences of expansion, including forced relocations and conflicts.
  • The response should highlight the broader impact on Native American society and culture.

Standard: 6.1.8.GeoSV.4.a | DOK: 3

Short Answer📘 MS-LS1-6🧠 DOK 4

Question:

Explain how photosynthesis contributes to the cycling of matter and flow of energy in an ecosystem. Include specific processes and elements involved in this cycle, and describe the impact on both plants and animals.

✅ Answer:
Photosynthesis plays a crucial role in the cycling of matter and flow of energy in an ecosystem. During photosynthesis, plants, algae, and some bacteria convert light energy from the sun into chemical energy stored in glucose. This process involves the intake of carbon dioxide (CO2) from the atmosphere and water (H2O) from the soil, which are converted into glucose (C6H12O6) and oxygen (O2) through a series of reactions facilitated by chlorophyll in the chloroplasts. The glucose produced provides energy for plants and forms the basis of the food chain, as other organisms consume these plants to obtain energy. Oxygen released as a byproduct is essential for cellular respiration in animals. Thus, photosynthesis is vital for the transformation of light energy into chemical energy, supporting life by providing food and oxygen, and maintaining atmospheric balance by cycling carbon dioxide and oxygen.

💡 Explanation:

  • Photosynthesis is fundamental to the cycling of matter and the flow of energy within ecosystems.
  • It converts solar energy into chemical energy, creating glucose and releasing oxygen.
  • This process not only provides energy and organic material for plants but also supports other organisms that rely on plants for food.
  • Additionally, photosynthesis helps regulate atmospheric gases, balancing carbon dioxide and oxygen levels, which are essential for life processes like respiration.
  • By understanding these connections, students can appreciate the integral role of photosynthesis in sustaining ecosystems.

Standard: MS-LS1-6 | DOK: 4

Dropdown📘 6.NS.C.5🧠 DOK 4

Question:

In a certain city, the temperature can vary significantly from day to night. On one particular day, the highest temperature recorded was 8 degrees below zero, while the lowest temperature was 15 degrees below zero. If these temperatures represent the opposite direction of the temperature scale, how would you describe the change in temperature? Select the correct description from the dropdown below.

Answer Choices:

  • A) The temperature increased by 7 degrees.
  • B) The temperature decreased by 7 degrees.
  • C) The temperature increased by 23 degrees.
  • D) The temperature decreased by 23 degrees.
✅ Answer:
The temperature increased by 7 degrees.

💡 Explanation:

  • The highest temperature was 8 degrees below zero and the lowest temperature was 15 degrees below zero.

  • To find the change, subtract the highest temperature from the lowest: -8 - (-15) = -8 + 15 = 7.

  • Thus, the temperature increased by 7 degrees from the lowest to the highest point.

Standard: 6.NS.C.5 | DOK: 4

Multiple choice📘 S.ID.C.7🧠 DOK 4

Question:

A researcher is studying the relationship between the number of hours students study and their resulting test scores. She creates a linear model to predict test scores based on study hours, given by the equation: y=2.5x+65 y = 2.5x + 65 , where y y is the test score and x x is the number of hours studied. What do the slope and y-intercept of the model represent in this context?

Answer Choices:

  • A) A) The slope represents the test score a student starts with, and the y-intercept represents how much the score increases per hour of study.
  • B) B) The slope represents the increase in test score per additional hour of study, and the y-intercept represents the base test score when no hours are studied.
  • C) C) The slope represents the total test score after studying, and the y-intercept represents the score decrease without study.
  • D) D) The slope represents the decrease in test score per hour of study, and the y-intercept represents the maximum possible test score.
✅ Answer:
B) The slope represents the increase in test score per additional hour of study, and the y-intercept represents the base test score when no hours are studied.

💡 Explanation:

  • In the equation y=2.5x+65 y = 2.5x + 65 , the slope 2.5 represents the increase in the test score for each additional hour of study.

  • The y-intercept 65 represents the test score when no hours are studied, meaning it is the baseline score.

Standard: S.ID.C.7 | DOK: 4

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