SCIENCE8
Quiz by MERCY PAGLINAWAN
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- Q1
A teacher is standing still in front of a class. Gravity pulls the teacher down towards the ground, while the ground exerts an equal and opposite force upwards on the teacher. Which of the following the interaction between the teacher and the ground based on Newton’s Laws of Motion?
Law of Universal Gravitation: Every particle attracts every other particle in the universe with a force.
Newton's First Law: An object remains at rest or in uniform motion unless acted upon by an external force.
Newton's Second Law: The acceleration of an object depends on the mass of the object and the amount of force applied.
Newton's Third Law: For every action, there is an equal and opposite reaction.
30s - Q2
Two balls are involved in a collision. One ball is moving in a straight line, while the other is at rest. Upon collision, the moving ball exerts a force on the stationary ball, causing it to accelerate. Simultaneously, the stationary ball exerts an equal force in the opposite direction, causing the moving ball to decelerate or change its direction.
Which of the following statements best describes the principle demonstrated by this interaction according to Newton’s Laws of Motion?
Newton's Third Law: For every action, there is an equal and opposite reaction.
Newton's Second Law: The force acting on an object is equal to the mass of the object multiplied by its acceleration.
Law of Conservation of Energy: Energy cannot be created or destroyed, only transferred, or changed from one form to another.
Newton's First Law: Objects will remain at rest or in uniform motion in a straight line unless acted upon by an external force.
30s - Q3
A person applies the same amount of force to two different boxes on a smooth surface. Box A has a mass of 1 kg, while Box B has a mass of 100 kg. If the same force is applied to both Box A and Box B, which of the following statements correctly describes what will happen?
Box B will accelerate faster because it has more mass.
Both boxes will not move because the force applied is not enough to overcome their mass.
Box A will accelerate faster because it has less mass.
Both boxes will accelerate at the same rate because the force applied is the same.
30s - Q4
In Figure 1, a group of girls is pushing a desk, causing it to move across the floor. The mass of the desk remains constant.
If the girls want to increase the acceleration ofthe desk while keeping its mass the same, what should they do to the amount offorce they exert?
Use the same force but push for a longer time.
Decrease the amount of force exerted on the desk.
Increase the amount of force exerted on the desk.
Keep the amount of force the same.
30s - Q5
In Figure 2, a person is swinging a ball attached to a rope in a circular path. The ball moves in a circular motion due to an inward force exerted by the person.
What will happen to the motion of the ball if the person suddenly releases the rope, removing the inward force?
The ball will move in a straight line, tangential to the circular path.
The ball will move straight outward away from the person.
The ball will continue moving in a circular path.
The ball will stop moving immediately.
30s - Q6
The ball will stop moving immediately.
A person applies a force of 500 N to push a 300 kg object, but it does not move in 10 seconds.
A person applies the same force of 500 N to push a100 kg object, moving it 6 meters in 5 seconds.
In which situation is a greater amount of work doneby the person, assuming the same amount of force is applied in both cases?
Both situations involve the same amount of worksince the force applied is the same.
Situation B, because the object is actually moved a certain distance.
Situation A, because more force is needed to tryto move the heavier object.
No work is done in either situation because theobjects do not change shape.
30s - Q7
Which situation does the greater amount of work, assuming an equal amount of force is applied? Why?
30s - Q8
The table below shows the weight, height of the stairs, time taken to climb the stairs, energy used, and power for four individuals. Use the information provided to answer the following question.
Based on the data in the table, what does it suggest about the relationship between energy used (work) and power? If Lisa doubled the amount of energy used while keeping the time constant, what would happen to her power?
It will remain the same.
It will increase by a factor of four.
It will be halved.
It will be doubled.
30s - Q9
In Figure 4, two mangoes are shown on a tree at different heights. Mango A is positioned higher, and Mango B is positioned lower. The potential energy (PE) of an object is given by the formula PE=mgh, where m is the mass, g is the acceleration due to gravity, and h is the height above the ground. Which mango possesses the greater potential energy at the acceleration due to gravity?
Mango B because of longer distance from the ground.
Mango A because of shorter distance from the ground.
Mango A because of greater distance from the ground.
Mango B because of shorter distance from the ground.
30s - Q10
A metal spoon with a temperature of 20°C is placed into a cup of water with a temperature of 90°C. After some time, the spoon becomes heated. What does this scenario illustrate about the transfer of heat?
Heat flows from the spoon to the water because the spoon is cooler.
Heat flows from the water to the spoon because the spoon has less mass.
Heat flows from the water to the spoon because the water has more thermal energy
Heat flows from the spoon to the water because metal is a good conductor.
30s - Q11
In electrical circuits, voltage (V), current (I),and resistance (R) are related through Ohm's Law, which states that voltage is directly proportional to current and resistance. Specifically, current is directly proportional to voltage but inversely proportional to resistance. What does this relationship imply about the behavior of electrical circuits?
Increasing resistance will increase current, provided the voltage remains constant.
Decreasing resistance will increase current, provided the voltage remains constant.
Voltage is independent of both current and resistance.
Increasing voltage will always increase current, regardless of resistance.
30s - Q12
An insulator increases the resistance of an electric circuit by decreasing the number of charges flowing through it. Consider how this change in resistance affects the current in the circuit. How will increasing the resistance of an electric circuit by using an insulator affect the current?
There will be no effect on the current.
The current will decrease.
The current will remain the same.
The current will increase.
30s - Q13
In the visible light spectrum, colors are arranged based on their wavelengths. Red appears below violet in this spectrum. What explains the position of red below violet in the color spectrum?
Red absorbs more light than violet, making itappear lower in the spectrum.
Red has a longer wavelength than violet, which places it at a lower position in the spectrum.
Red is a primary color, while violet is a secondary color, causing it to be positioned lower in the spectrum.
Red has a shorter wavelength than violet, which places it at a lower position in the spectrum.
30s - Q14
The colors of the visible spectrum are arranged in the order of ROYGBIV (Red, Orange, Yellow, Green, Blue, Indigo, Violet). This sequence is based on specific properties of light. Which statement best explains the basis for the arrangement of colors in the spectrum as ROYGBIV?
The colors are arranged alphabetically, starting with red and ending with violet.
The colors are arranged by their temperature, with red being the coolest and violet being the hottest.
The colors are arranged by their intensity, with red being the most intense and violet the least.
The colors are arranged according to their wavelength, with red having the longest wavelength and violet having the shortest.
30s - Q15
Geologic phenomena, such as earthquakes, are often concentrated in specific regions around the world. Certain locations along the curved belts of volcanic islands are known for having a higher frequency of these events.
Which of the following earthquakes occur more frequently?
Continents and Oceanic Floor
Geological Zone Weakness
Pacific Oceanic
Pacific Ring of Fire
30s
