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Diagnostic TEST Science 8 SY 2023-2024
BS Education
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Republic of the Philippines
Department of Education
REGION X SCHOOLS DIVISION OF CAGAYAN DE ORO CITY DIAGNOSTIC TEST- SCIENCE 8
This test consists of multiple-choice questions. Read each question and all the answer choices carefully before selecting
your answer. Write only the letter that corresponds to your best answer.
When a constant force is applied to an object, what happens to the acceleration of the object if its mass is doubled? A. The acceleration also doubles. C. The acceleration remains the same. B. The acceleration is halved. D. The acceleration becomes four times greater.
According to Newton's second law of motion, how does the acceleration of an object change when the force applied to it remains constant and its mass is increased? A. The acceleration increases. C. The acceleration remains the same. B. The acceleration decreases. D. The acceleration becomes zero.
If an object experiences a net force of 20 N and undergoes an acceleration of 5 m/s², what is the mass of the object? A. 25 kg B. 100 kg C. 4 kg D. 0 kg
A force of 30 N is applied to an object with a mass of 6 kg. What is the resulting acceleration of the object? A. 5 m/s² B. 36 m/s² C. 180 m/s² D. 35 m/s²
If the mass of an object is 10 kg and it experiences an acceleration of 8 m/s², what is the magnitude of the force applied to it? A. 2 N B. 18 N C. 80 N D. 0 N
According to Newton's third law of motion, if object A exerts a force of 20 N on object B, what is the force exerted by object B on object A? A. 20 N B. 40 N C. 10 N D. 0 N
When you push a wall with a force of 50 N, what force does the wall exert on you according to Newton's third law of motion? A. 0 N B. 25 N C. 50 N D. 100 N
If a skateboarder pushes against the ground with a force of 30 N, how does the ground react? A. The ground does not react due to friction. B. The ground exerts a smaller force in the opposite direction. C. The ground exerts a larger force in the same direction. D. The ground exerts an equal force in the opposite direction.
If a rocket engine generates a force of 5000 N upward, what force does the rocket experience according to Newton's third law? A. 5000 N downward B. 2500 N upward C. 5000 N upward D. 10000 N downward
When a bird pushes the air downward with its wings, what force does the air exert on the bird? A. The air does not exert any force on the bird. C. The air exerts a force downward on the bird. B. The air exerts a force upward on the bird. D. The air exerts a force horizontally on the bird.
Which of the following factors affects both potential and kinetic energy? A. Mass of the object C. Speed of light B. Color of the object D. Temperature of the environment
When an object is lifted to a higher position, what happens to its potential energy? A. It decreases. B. It remains constant. C. It becomes kinetic energy. D. It increases.
As the temperature of a medium increases, what generally happens to the speed of sound in that medium? A. The speed of sound decreases. C. The speed of sound increases. B. The speed of sound remains constant. D. The speed of sound becomes unpredictable.
Which color of visible light has the highest energy? A. Red B. Green C. Blue D. Violet 15 What is the fundamental difference between heat and temperature? A. Heat refers to the total kinetic energy of particles, while temperature refers to the average kinetic energy of particles. B. Heat and temperature are the same concepts and can be used interchangeably. C. Heat refers to the movement of particles, while temperature refers to their arrangement. D. Heat refers to the energy stored in chemical bonds, while temperature refers to the energy of motion.
What process leads to the generation of earthquakes along faults?
A. Erosion of rock layers C. Accumulation of rainwater B. Heating of the Earth's surface D. Release of built-up stress 17. What is the point beneath the Earth's surface where an earthquake starts? A. Epicenter B. Seismic station C. Focus or hypocenter D. Surface rupture 18. Which type of fault movement is characterized by rocks moving upward along an inclined fault plane? A. Normal fault B. Reverse fault C. Strike-slip fault D. Transform fault 19. Which type of stress occurs when rocks are pushed together along a fault line? A. Tensional stress B. Compressional stress C. Shearing stress D. Elastic stress 20. What scale is commonly used to measure the magnitude of earthquakes? A. Richter scale B. Wind scale C. Mercalli scale D. Beaufort scale 21. What defines an active fault? A. A fault that has stopped moving and is no longer capable of generating earthquakes. B. A fault that is currently experiencing an earthquake. C. A fault that is capable of generating earthquakes due to recent movement. D. A fault that is no longer in contact with the Earth's surface. 22. Which term is used to describe a fault that is no longer capable of generating earthquakes due to long periods of inactivity? A. Active fault B. Dormant fault C. Inactive fault D. Thrust fault 23. 2Which type of fault is characterized by rocks moving horizontally past each other? A. Normal fault B. Reverse fault C. Strike-slip fault D. Thrust fault 24. What is the primary factor that distinguishes an active fault from an inactive fault? A. The type of rocks involved in the fault C. Recent movement and earthquake potential B. The direction of fault movement D. The depth of the fault within the Earth's crust 25. What is a thrust fault? A. A type of fault that occurs only in volcanic regions B. A fault with vertical displacement C. A fault with horizontal displacement D. A low-angle reverse fault 26. How do typhoons develop? A. Through volcanic eruptions B. As a result of tectonic plate movements C. From the collision of asteroids with Earth D. From the interaction of warm ocean waters and atmospheric conditions 27. What role do warm ocean waters play in typhoon formation? A. They cool down the atmosphere, leading to typhoon formation. B. They provide a stable environment that prevents typhoon development. C. They release energy through condensation, fueling the typhoon's growth. D. They absorb excess energy from the atmosphere, suppressing typhoon formation. 28. How does the Coriolis effect influence the direction of typhoon movement? A. It causes typhoons to move towards the equator. B. It causes typhoons to move in a straight line. C. It causes typhoons to curve in a clockwise direction in the Northern Hemisphere. D. It has no influence on typhoon movement.
How are typhoons affected by the presence of landmasses? A. Landmasses have no effect on typhoons. B. Landmasses weaken typhoons by reducing their energy. C. Landmasses enhance the strength of typhoons by providing more heat. D. Landmasses disrupt typhoons by cutting off their energy supply from warm waters.
What is the "eye" of a typhoon? A. The outer region of intense rainfall and wind C. The location where typhoons originate B. The central calm and low-pressure area D. A term used to describe a weak typhoon
Which celestial body is primarily composed of rock and metal and orbits the Sun? A. Comet B. Meteoroid C. Asteroid D. Meteorite
What is a comet primarily made of? A. Rock and metal B. Dust and gas C. Frozen water and gases D. Solid rock
Which of the following is a rocky or metallic object that enters Earth's atmosphere and burns up, producing a streak of light? A. Asteroid B. Meteoroid C. Comet D. Meteorite
What is the streak of light produced by a meteoroid burning up in Earth's atmosphere called? A. Asteroid B. Comet C. Meteor D. Meteorite
Which celestial body is often referred to as a "dirty snowball" due to its mixture of ice, frozen gases, dust, and rocky material?
Answer: b) The acceleration is halved.
Answer: b) The acceleration decreases.
Answer: c) 4 kg
Answer: a) 5 m/s²
Answer: c) 80 N
Answer: a) 20 N
Answer: c) 50 N
Answer: d) The ground exerts an equal force in the opposite direction.
Answer: a) 5000 N downward
Answer: b) The air exerts a force upward on the bird.
Answer: a) Mass of the object
Answer: d) It increases.
Answer: c) The speed of sound increases.
Answer: d) Violet
Answer: a) Heat refers to the total kinetic energy of particles, while temperature refers to the average kinetic energy of particles.
Answer: d) Release of built-up stress
Answer: c) Focus or hypocenter
Answer: b) Reverse fault
Answer: b) Compressional stress
Answer: a) Richter scale
Answer: c) A fault that is capable of generating earthquakes due to recent movement.
Answer: c) Inactive fault
Answer: c) Strike-slip fault
Answer: c) Recent movement and earthquake potential
Answer: d) A low-angle reverse fault
Answer: d) From the interaction of warm ocean waters and atmospheric conditions
Answer: c) They release energy through condensation, fueling the typhoon's growth.
Answer: c) It causes typhoons to curve in a clockwise direction in the Northern Hemisphere.
Answer: d) Landmasses disrupt typhoons by cutting off their energy supply from warm waters.
Answer: b) The central calm and low-pressure area
Answer: c) Asteroid
Answer: c) Frozen water and gases
Answer: b) Meteoroid
Answer: c) Meteor
Answer: d) Comet
Answer: c) Matter is composed of atoms and molecules that are in constant motion.
Answer: b) Liquid
Answer: a) Solid
Answer: c) Gas particles are widely spaced and move randomly at high speeds.
Answer: b) The particles are rearranged, but their identity remains the same.
Answer: b) Mass number
Answer: c) Ingestion
Answer: d) Producing genetically diverse gametes
Answer: b) It reduces the chromosome number by half.
Answer: c) AB, Ab, aB, ab
Answer: c) Organisms that can interbreed and produce fertile offspring
Answer: c) It enhances ecosystem resilience against disturbances.
Answer: c) They break down organic matter and recycle nutrients.
Answer: c) Reducing energy consumption and using renewable energy sources
Answer: d) Meeting current food needs while preserving resources for future generations
Diagnostic TEST Science 8 SY 2023-2024
Subject: BS Education
School: Carigara National High School
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