ACT Science Practice Tests 2

ACT Science Practice Tests 2

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25/02/2024

  • Total Question : 6
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  • 1)

     

    Scientist 1

    Gravity really does exist. It acts according to the laws which we have explained and abundantly serves to account for all the motions of celestial bodies. Gravity is a predictable force that acts on all matter in the universe and is a function of both mass and distance. Each particle of matter attracts every other particle (for instance, the particles of “Earth” and the particles of “you”) with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. So, the farther apart the particles are, and/or the less massive the particles, the less the gravitational force. When you deal with massive bodies like the Earth, however, which has a mass of 6E+24 kilograms, it adds up to a rather powerful gravitational force. That’s why you’re not floating around in space right now. The force of gravity acting on an object is also that object’s weight. When you step on a scale, the scale reads how much gravity is acting on your body. 

    Scientist 2

     Gravity is much weirder: a natural consequence of a mass’s influence on space. Gravity is not a force but it is a distortion of space (or more precisely, spacetime) caused by the presence of matter or energy. A massive object generates a gravitational field by warping the geometry of the surrounding spacetime.    The curvature of spacetime affects light rays. So, light is also affected by gravity. Gravity affects the paths of photons, even though they have no mass. Massive objects in space will cause warping or distortion of space-time which we all “feel” as gravity.  The effects of gravity can be described by the curvature of space and time, usually just called ‘space-time’ curvature. So, matter follows the curvature of space, but we know matter is the source of gravity, so the curvature responds to matter as well. Space is nothing more than the relative position of two systems, that there is no objective space (nor time) that applies to every observer, and both motion and simultaneity in time depend on the choice of reference frames.

    Which of the following statement can explain the fact that earth is not moving to any other bigger star than our sun from the perspective of scientist 1?

    Your Answer : Not attemptedCorrect Answer : The distance between our sun and earth is less, therefore, the lesser the distance the greater is the gravitational force.
  • 2)

    Scientist 1

    Gravity really does exist. It acts according to the laws which we have explained and abundantly serves to account for all the motions of celestial bodies. Gravity is a predictable force that acts on all matter in the universe and is a function of both mass and distance. Each particle of matter attracts every other particle (for instance, the particles of “Earth” and the particles of “you”) with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. So, the farther apart the particles are, and/or the less massive the particles, the less the gravitational force. When you deal with massive bodies like the Earth, however, which has a mass of 6E+24 kilograms, it adds up to a rather powerful gravitational force. That’s why you’re not floating around in space right now. The force of gravity acting on an object is also that object’s weight. When you step on a scale, the scale reads how much gravity is acting on your body. 

    Scientist 2

     Gravity is much weirder: a natural consequence of a mass’s influence on space. Gravity is not a force but it is a distortion of space (or more precisely, spacetime) caused by the presence of matter or energy. A massive object generates a gravitational field by warping the geometry of the surrounding spacetime.    The curvature of spacetime affects light rays. So, light is also affected by gravity. Gravity affects the paths of photons, even though they have no mass. Massive objects in space will cause warping or distortion of space-time which we all “feel” as gravity.  The effects of gravity can be described by the curvature of space and time, usually just called ‘space-time’ curvature. So, matter follows the curvature of space, but we know matter is the source of gravity, so the curvature responds to matter as well. Space is nothing more than the relative position of two systems, that there is no objective space (nor time) that applies to every observer, and both motion and simultaneity in time depend on the choice of reference frames.

     

    Which of the following statement explains the gravity from the perspective of scientist 2?

    Your Answer : Not attemptedCorrect Answer : Gravity is caused because of the matter which distorts the space between the two objects.
  • 3)

    Scientist 1

    Gravity really does exist. It acts according to the laws which we have explained and abundantly serves to account for all the motions of celestial bodies. Gravity is a predictable force that acts on all matter in the universe and is a function of both mass and distance. Each particle of matter attracts every other particle (for instance, the particles of “Earth” and the particles of “you”) with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. So, the farther apart the particles are, and/or the less massive the particles, the less the gravitational force. When you deal with massive bodies like the Earth, however, which has a mass of 6E+24 kilograms, it adds up to a rather powerful gravitational force. That’s why you’re not floating around in space right now. The force of gravity acting on an object is also that object’s weight. When you step on a scale, the scale reads how much gravity is acting on your body. 

    Scientist 2

     Gravity is much weirder: a natural consequence of a mass’s influence on space. Gravity is not a force but it is a distortion of space (or more precisely, spacetime) caused by the presence of matter or energy. A massive object generates a gravitational field by warping the geometry of the surrounding spacetime.    The curvature of spacetime affects light rays. So, light is also affected by gravity. Gravity affects the paths of photons, even though they have no mass. Massive objects in space will cause warping or distortion of space-time which we all “feel” as gravity.  The effects of gravity can be described by the curvature of space and time, usually just called ‘space-time’ curvature. So, matter follows the curvature of space, but we know matter is the source of gravity, so the curvature responds to matter as well. Space is nothing more than the relative position of two systems, that there is no objective space (nor time) that applies to every observer, and both motion and simultaneity in time depend on the choice of reference frames.

    We weigh slightly more on the mountains. How can we explain this fact from the perspective of either scientist?

    Your Answer : Not attemptedCorrect Answer : Scientist 1: The greater distance on mountains results in lesser gravitational force.
  • 4)

    Scientist 1

    Gravity really does exist. It acts according to the laws which we have explained and abundantly serves to account for all the motions of celestial bodies. Gravity is a predictable force that acts on all matter in the universe and is a function of both mass and distance. Each particle of matter attracts every other particle (for instance, the particles of “Earth” and the particles of “you”) with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. So, the farther apart the particles are, and/or the less massive the particles, the less the gravitational force. When you deal with massive bodies like the Earth, however, which has a mass of 6E+24 kilograms, it adds up to a rather powerful gravitational force. That’s why you’re not floating around in space right now. The force of gravity acting on an object is also that object’s weight. When you step on a scale, the scale reads how much gravity is acting on your body. 

    Scientist 2

     Gravity is much weirder: a natural consequence of a mass’s influence on space. Gravity is not a force but it is a distortion of space (or more precisely, spacetime) caused by the presence of matter or energy. A massive object generates a gravitational field by warping the geometry of the surrounding spacetime.    The curvature of spacetime affects light rays. So, light is also affected by gravity. Gravity affects the paths of photons, even though they have no mass. Massive objects in space will cause warping or distortion of space-time which we all “feel” as gravity.  The effects of gravity can be described by the curvature of space and time, usually just called ‘space-time’ curvature. So, matter follows the curvature of space, but we know matter is the source of gravity, so the curvature responds to matter as well. Space is nothing more than the relative position of two systems, that there is no objective space (nor time) that applies to every observer, and both motion and simultaneity in time depend on the choice of reference frames.

    According to scientist 2, gravitation fields are generated due to the:

    Your Answer : Not attemptedCorrect Answer : Presence of Matter
  • 5)

    Scientist 1

    Gravity really does exist. It acts according to the laws which we have explained and abundantly serves to account for all the motions of celestial bodies. Gravity is a predictable force that acts on all matter in the universe and is a function of both mass and distance. Each particle of matter attracts every other particle (for instance, the particles of “Earth” and the particles of “you”) with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. So, the farther apart the particles are, and/or the less massive the particles, the less the gravitational force. When you deal with massive bodies like the Earth, however, which has a mass of 6E+24 kilograms, it adds up to a rather powerful gravitational force. That’s why you’re not floating around in space right now. The force of gravity acting on an object is also that object’s weight. When you step on a scale, the scale reads how much gravity is acting on your body. 

    Scientist 2

     Gravity is much weirder: a natural consequence of a mass’s influence on space. Gravity is not a force but it is a distortion of space (or more precisely, spacetime) caused by the presence of matter or energy. A massive object generates a gravitational field by warping the geometry of the surrounding spacetime.    The curvature of spacetime affects light rays. So, light is also affected by gravity. Gravity affects the paths of photons, even though they have no mass. Massive objects in space will cause warping or distortion of space-time which we all “feel” as gravity.  The effects of gravity can be described by the curvature of space and time, usually just called ‘space-time’ curvature. So, matter follows the curvature of space, but we know matter is the source of gravity, so the curvature responds to matter as well. Space is nothing more than the relative position of two systems, that there is no objective space (nor time) that applies to every observer, and both motion and simultaneity in time depend on the choice of reference frames.

    Which of the following option best describes the gravity explained by two scientists?

    Your Answer : Not attemptedCorrect Answer : Scientist 1: Gravity is a force that is directly proportional to the product of masses of two objects. Scientist 2: Gravity is not a force and it occurs naturally in the presence of matter.
  • 6)

    Scientist 1

    Gravity really does exist. It acts according to the laws which we have explained and abundantly serves to account for all the motions of celestial bodies. Gravity is a predictable force that acts on all matter in the universe and is a function of both mass and distance. Each particle of matter attracts every other particle (for instance, the particles of “Earth” and the particles of “you”) with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. So, the farther apart the particles are, and/or the less massive the particles, the less the gravitational force. When you deal with massive bodies like the Earth, however, which has a mass of 6E+24 kilograms, it adds up to a rather powerful gravitational force. That’s why you’re not floating around in space right now. The force of gravity acting on an object is also that object’s weight. When you step on a scale, the scale reads how much gravity is acting on your body. 

    Scientist 2

     Gravity is much weirder: a natural consequence of a mass’s influence on space. Gravity is not a force but it is a distortion of space (or more precisely, spacetime) caused by the presence of matter or energy. A massive object generates a gravitational field by warping the geometry of the surrounding spacetime.    The curvature of spacetime affects light rays. So, light is also affected by gravity. Gravity affects the paths of photons, even though they have no mass. Massive objects in space will cause warping or distortion of space-time which we all “feel” as gravity.  The effects of gravity can be described by the curvature of space and time, usually just called ‘space-time’ curvature. So, matter follows the curvature of space, but we know matter is the source of gravity, so the curvature responds to matter as well. Space is nothing more than the relative position of two systems, that there is no objective space (nor time) that applies to every observer, and both motion and simultaneity in time depend on the choice of reference frames.

     

    Gravity is directly proportional to the product of masses of the two objects. Which of the following statement weakens this argument?

    Your Answer : Not attemptedCorrect Answer : The light rays coming to the earth.

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    • Total Question : 6
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