Form Two - Miscellaneous Quiz 4

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🕰️ Duration: 15 minutes

❓ Number of Questions: 2

⏰ Time Remaining: 15:00

⌛ Progress: 0 / 2

During a hands-on science lesson, Jelvin is unsure about the safety precautions when using a test tube. He asks, “Which direction should we point the open end of the test tube during heating?” How would you respond?

A. Toward oneself B. Toward one’s lab partner C. Toward other classmates D. Away from all people

In a physics class, the teacher points to a microscope resting on a desk and ask, ”Why is the microscope not in motion?” What is the best explanation for this?

A. Numerous forces are acting on the microscope, but primarily, it is inertia that prevents it from moving B. Gravity exert a force on the microscope. Only the microscope’s weight prevent it from sliding off the desk C. There is a single force, air pressure, acting on the microscope. The room’s air presses down, keeping the microscope on the desk D. Two force, are at play on the microscope. The desk exerts an upward force, while gravity pulls it downward. The equilibrium of these forces keeps the microscope still.

A civil engineer is designing a floating bridge to span a river. The bridge will consist of pontoons that need to support the weight of the entire structure. The engineer wants to ensure that the bridge remains buoyant and stable. Which of the following design considerations is most aligned with Archimedes’ principle?

A. Increasing the mass of the pontoon to enhance stability B. Reducing the volume of water displaced to minimize buoyant force C. Increasing overall weight of the bridge for better grounding D. Designing pontoons that displace a greater volume of water

Bunji is reading book bout scientific phenomena and comes across Brownian motion. He’s curious about the cause of this motion. What is the most accurate reason for the movement of particles in Brownian motion?

A. Gusts of wind B. Atoms and molecules C. Sound waves D. Light waves

Batuli is visiting an aquarium and is captivated by the fish swimming at different depths. She wonders about the properties of water pressure in the tanks. Which of the following statements is not accurate regarding the pressure at a given depth in a fluid?

A. Is equal in all directions B. Is independent of the shape of the container C. Acts at right angles to the surface containing the fluid D. Depends on the area of the surface

Sia is in her physics class, learning about energy conservation and work. She fascinated by how energy relates to everyday scenarios. Which statement describes the relationship between the energy of an object and the work done it in everyday situations?

A. Work is needed for an object to keep a constant kinetic energy B. Work is needed for an object to keep a constant potential energy C. Increasing the kinetic energy of an object increases the amount of work needed to stop it D. Increasing the potential energy of an object decreases the amount of work needed to stop it

A person has an urgent message to send to his friend. Which exactly means can be used as quickly as possible?

A. Handline and mobile phone B. Microphone and telephone C. Megaphone and telephone D. Megaphone and microphone

A teacher while teaching, taught students that the temperature of a place changes according to the environment and they all measured the temperature of Dar es Salaam town as 32°C. This is equivalent to

A. 306k B. 241k C. 305k D. 205k

When a plastic pen is rubbed against dry hair, the pen attracts small pieces of papers. This implies that

A. The hair become negatively recharged B. The hair gain electrons C. Pen loses electrons D. The hair become positively recharged

A man looked his face on unsilvered part of plane mirror, the image formed. What are the characteristics of image formed among the following?

A. Real and laterally inverted B. Virtual and laterally inverted C. Real and magnified D. Virtual and diminished