Worksheet Solutions: Fun and Creative Projects - 2 | DIY Science Fun: Cool School Projects - Class 6 PDF Download

Fill in the Blanks 

Q1: Making a mini mixer at home can be an educational project for students in ______________ grade.
Ans: 6th

Q2: The primary power source for the mini mixer is a ______________ battery.
Ans: 9-volt

Q3: A ______________ is attached to one of the wires to control the power supply to the mini mixer.
Ans: switch

Q4: The DC motor in the mini mixer converts ______________ energy into mechanical energy.
Ans: electrical

Q5: ______________ sticks are attached to the DC motor to serve as the mixing components.
Ans: Bamboo

Q6: Safety glasses should be worn to protect your ______________ during the project.
Ans: eyes

Q7: The battery connector is securely attached to the ______________ using hot melting glue or tape.
Ans: battery

Q8: The switch used in the mini mixer project is a ______________.
Ans: single pole single throw switch (SPST)

Q9: The mini mixer project allows for ______________ mixing of substances like tea or coffee.
Ans: convenient

Q10: ______________ should always supervise science projects to ensure safety.
Ans: Parents, teachers, or older siblings

Multiple Choice Questions

Q1: What is the primary purpose of a switch in the mini mixer project?
(a) To connect bamboo sticks
(b) To control the power supply
(c) To mix tea or coffee
(d) To hold the battery
Ans: (b) To control the power supply
The switch in the mini mixer project is used to control the power supply to the mixer, allowing it to be turned on and off easily.

Q2: What type of energy does the DC motor in the mini mixer project convert?
(a) Mechanical energy
(b) Thermal energy
(c) Electrical energy
(d) Chemical energy
Ans: (c) Electrical energy
The DC motor converts electrical energy from the battery into mechanical energy to rotate the bamboo sticks.

Q3: Why is safety glasses recommended during the mini mixer project?
(a) To enhance vision
(b) To look stylish
(c) To protect eyes from potential hazards
(d) To prevent electrical accidents
Ans: (c) To protect eyes from potential hazards
Safety glasses are worn to protect the eyes from potential hazards during the project, such as flying debris or hot glue.

Q4: What is the advantage of using a mini mixer for mixing substances like tea or coffee?
(a) Slower mixing
(b) Manual control
(c) Faster and easier mixing
(d) Less hygienic work
Ans: (c) Faster and easier mixing
A mini mixer makes the task of mixing substances like tea or coffee faster and more convenient compared to manual mixing methods.

Q5: Who should supervise science projects like the mini mixer project to ensure safety?
(a) Friends
(b) Parents, teachers, or older siblings
(c) Younger siblings
(d) No supervision needed
Ans: (b) Parents, teachers, or older siblings
Science projects should be supervised by parents, teachers, or older siblings to ensure safety and guidance.

True and False

Q1: True or False: The primary power source for the mini mixer is a solar panel.
Ans: False
The primary power source is a 9-volt battery, not a solar panel.

Q2: True or False: The switch in the mini mixer project controls the rotation of the bamboo sticks.
Ans: False
The switch controls the power supply to the mini mixer but does not control the rotation of the bamboo sticks directly.

Q3: True or False: Safety glasses are recommended during the mini mixer project to enhance vision.
Ans: False
Safety glasses are recommended to protect the eyes from potential hazards, not to enhance vision.

Q4: True or False: A mini mixer makes mixing substances like tea or coffee less convenient compared to manual methods.
Ans: False
A mini mixer makes mixing more convenient and faster compared to manual methods.

Q5: True or False: Younger siblings can supervise science projects like the mini mixer project.
Ans: False
Science projects should be supervised by parents, teachers, or older siblings who can provide guidance and ensure safety.

Short Answer Questions

Q1: Explain the role of the DC motor in the mini mixer project and how it converts energy.
Ans: The DC motor in the mini mixer project serves as the component that converts electrical energy into mechanical energy. When connected to the battery, the motor's electrical components generate a magnetic field that interacts with the magnetic field created by the battery's electrical current. This interaction causes the motor's shaft to rotate, which in turn, rotates the bamboo sticks attached to it. The mechanical energy produced by the motor's rotation is used for mixing substances like tea or coffee.

Q2: Describe the purpose of the switch in the mini mixer project and how it functions.
Ans: The switch in the mini mixer project plays a crucial role in controlling the power supply to the mini mixer. It is a single pole single throw switch (SPST) that can be easily toggled on or off. When the switch is in the "on" position, it allows the electrical current from the battery to flow to the DC motor, powering the mixer and causing it to rotate the bamboo sticks. When the switch is in the "off" position, it interrupts the flow of electrical current, effectively turning off the mini mixer. This switch provides a convenient way to control the mixer's operation.

Q3: Why is it important to securely attach components like the battery connector and DC motor in the mini mixer project?
Ans: It is essential to securely attach components like the battery connector and DC motor in the mini mixer project to ensure the mixer's stability and functionality. Secure attachments prevent components from coming loose during operation, reducing the risk of accidents and damage. A stable connection between the battery connector and the battery ensures a consistent power supply to the motor, allowing it to operate smoothly. Likewise, securely attaching the DC motor to the battery connector ensures that the motor's rotation is transmitted effectively to the bamboo sticks, enabling efficient mixing.

Q4: How does a mini mixer offer advantages in terms of convenience and hygienic work compared to manual mixing methods?
Ans: A mini mixer offers several advantages in terms of convenience and hygienic work compared to manual mixing methods. Firstly, it facilitates faster and easier mixing of substances like tea or coffee, reducing the time and effort required for the task. Secondly, it provides consistent and thorough mixing, ensuring that ingredients are evenly blended. This consistency leads to better results in terms of taste and texture. Additionally, using a mini mixer is more hygienic as it reduces the need for manual handling of mixing tools, minimizing the risk of contamination from hands or utensils. The mixer's components can be cleaned and sanitized easily, further enhancing hygiene in the mixing process.

Q5: Why is it recommended to conduct the mini mixer project under the supervision of parents, teachers, or older siblings?
Ans: It is recommended to conduct the mini mixer project under the supervision of parents, teachers, or older siblings for several reasons. Firstly, supervision ensures the safety of the person performing the project, especially when working with electrical components and tools. Supervisors can provide guidance, offer assistance in case of difficulties, and ensure that safety precautions are followed. Secondly, supervision enhances the learning experience by providing explanations and insights into the scientific concepts involved in the project. It also allows for troubleshooting and correction of any mistakes. Overall, supervision by knowledgeable individuals ensures a safe, educational, and successful completion of the mini mixer project.