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Short answer📘 MS-PS2-3🧠 DOK 1

Question:

What factors can affect the strength of electric and magnetic forces?

✅ Answer:
The factors that can affect the strength of electric and magnetic forces include the magnitude of the charges or currents, the distance between the objects, and the medium through which the forces are acting.

💡 Explanation:

  • Electric and magnetic forces can be affected by several factors.
  • The magnitude of the charges or currents involved will influence the strength of the forces; larger charges or currents generally result in stronger forces.
  • The distance between the objects also plays a crucial role; the greater the distance, the weaker the force.
  • Additionally, the medium through which the forces are acting can affect their strength, as some materials can enhance or diminish the forces.

Standard: MS-PS2-3 | DOK: 1

Recent Questions

Dropdown📘 N.Q.A.1🧠 DOK 3

Question:

A car travels at a constant speed of 60 miles per hour. How long will it take for the car to travel 180 miles? Use appropriate units to express your answer.

Answer Choices:

  • A) 1 hour
  • B) 2 hours
  • C) 3 hours
  • D) 4 hours
✅ Answer:
3 hours

💡 Explanation:

  • To find the time it takes to travel a certain distance at a constant speed, use the formula: time = distance / speed.

  • Here, distance = 180 miles, and speed = 60 miles per hour, so time = 180 miles / 60 miles per hour = 3 hours.

  • The units of miles cancel out, leaving the units of hours, indicating the time taken.

Standard: N.Q.A.1 | DOK: 3

Dropdown📘 8.G.B.6🧠 DOK 1

Question:

Which of the following statements explains the Pythagorean Theorem?

Answer Choices:

  • A) In a right triangle, the sum of the squares of the lengths of the legs is equal to the square of the length of the hypotenuse.
  • B) In all triangles, the sum of the interior angles is 180 degrees.
  • C) In an isosceles triangle, the angles opposite the equal sides are equal.
  • D) In a triangle, the exterior angle is equal to the sum of the two interior opposite angles.
✅ Answer:
In a right triangle, the sum of the squares of the lengths of the legs is equal to the square of the length of the hypotenuse.

💡 Explanation:

  • The Pythagorean Theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the lengths of the other two sides (the legs).

  • This fundamental relation in Euclidean geometry applies only to right triangles.

Standard: 8.G.B.6 | DOK: 1

Dropdown📘 MS-PS1-2🧠 DOK 1

Question:

A student mixes two clear liquids together in a beaker. After a few minutes, they observe that a solid has formed and settled at the bottom of the beaker. Which of the following observations best indicates that a chemical reaction has occurred?

Answer Choices:

  • A) The liquids remain clear and do not change.
  • B) A solid forms and settles at the bottom.
  • C) The temperature of the liquids remains constant.
  • D) The liquids change color without forming a solid.
✅ Answer:
A solid forms and settles at the bottom.

💡 Explanation:

  • The formation of a solid when two liquids are mixed indicates a chemical reaction has occurred, as new substances are formed.
  • This new substance is a precipitate.

Standard: MS-PS1-2 | DOK: 1

Short Answer📘 MS-LS1-2🧠 DOK 4

Question:

Develop a detailed model to explain the function of a plant cell as a whole. In your explanation, describe how specific organelles contribute to the cell's overall function. Consider including the role of the cell wall, chloroplasts, and the nucleus in your model. How do these components interact to support the life of the cell?

✅ Answer:
A detailed model of a plant cell would include key organelles such as the cell wall, chloroplasts, and the nucleus. The cell wall provides structural support and protection, maintaining the shape of the cell and preventing excessive water intake. Chloroplasts are the sites of photosynthesis, converting sunlight into chemical energy stored as glucose, which is vital for the cell's energy needs. The nucleus acts as the control center, housing DNA and regulating gene expression and cell functions. These organelles work together as the chloroplasts supply energy, the nucleus directs cellular activities, and the cell wall ensures stability and protection, all contributing to the cell's survival and function.

💡 Explanation:

  • The plant cell is a complex structure where each organelle plays a crucial role.
  • The cell wall maintains the integrity and shape of the cell, chloroplasts facilitate photosynthesis to produce energy, and the nucleus controls activities by managing genetic information.
  • The interaction between these organelles ensures the cell can perform necessary life functions efficiently.

Standard: MS-LS1-2 | DOK: 4

Multiple choice📘 N.RN.A.3🧠 DOK 3

Question:

Simplify the expression 50x4y5 \sqrt{50x^4y^5} .

Answer Choices:

  • A)

    A)5x2y22yA) 5x^2y^2\sqrt{2y}

  • B)

    B)5x2y25yB) 5x^2y^2\sqrt{5y}

  • C)

    C)5x2y210yC) 5x^2y^2\sqrt{10y}

  • D)

    D)10x2y25yD) 10x^2y^2\sqrt{5y}

✅ Answer:

A) 5x^2y^2\sqrt{2y}

💡 Explanation:

  • To simplify the expression 50x4y5 \sqrt{50x^4y^5} , we first look at each part separately.

  • The number 50 can be factored into 25×2 25 \times 2 , so 50=25×2=52 \sqrt{50} = \sqrt{25} \times \sqrt{2} = 5\sqrt{2} .

  • For the variable x4 x^4 , x4=x2 \sqrt{x^4} = x^2 .

  • For y5 y^5 , we split it as y4×y y^4 \times y , so y5=y4×y=y2y \sqrt{y^5} = \sqrt{y^4} \times \sqrt{y} = y^2\sqrt{y} .

  • Combining these, the simplified expression is 5x2y22y 5x^2y^2\sqrt{2y} .

Standard: N.RN.A.3 | DOK: 3

Multiple choice📘 MS-ESS3-5🧠 DOK 1

Question:

Which of the following is a major factor that has contributed to climate change over the past century?

Answer Choices:

  • A) Increased volcanic activity
  • B) Deforestation
  • C) The natural cycle of the Earth
  • D) Decreased solar activity
✅ Answer:
Deforestation

💡 Explanation:

  • Deforestation is a major factor contributing to climate change as it increases the amount of carbon dioxide in the atmosphere, one of the greenhouse gases responsible for global warming.

Standard: MS-ESS3-5 | DOK: 1

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