Worksheet Solutions: Mechanical Projects - 5 | DIY Science Fun: Cool School Projects - Class 6 PDF Download

Fill in the Blanks

Q1: Escalators are commonly found in places like malls, train stations, and airports, offering a convenient way to move between different ________.
Ans: levels

Q2: To create an escalator school project, you'll need a gear motor, cardboard, rubber tube, colored paper, a toilet roll, and a ________.
Ans: DC adapter

Q3: The circular cardboard pieces are glued to the toilet roll to form the ________ for the escalator.
Ans: base

Q4: The power source for the escalator model is a ________ motor, which operates at a lower RPM compared to a standard motor.
Ans: gear

Q5: Escalators are designed primarily for ________ distances, typically spanning two to three stories.
Ans: short

Q6: The most common type of escalator is the ________ escalator, which consists of two escalators running in parallel.
Ans: parallel

Q7: One advantage of escalators is that they can efficiently transport a large number of ________ simultaneously.
Ans: people

Q8: Escalators prioritize safety and often operate ________.
Ans: silently

Q9: Overreliance on escalators can contribute to a ________ lifestyle.
Ans: sedentary

Q10: The escalator science project can be an excellent choice for a ________ fair idea, especially for 9th-grade students.
Ans: science

Multiple Choice Questions (MCQ)

Q1: What is the primary power source for the escalator model in the school project?
(a) Solar panels
(b) Wind energy
(c) Gear motor (BO motor)
(d) Diesel engine
Ans: (c) Gear motor
The primary power source for the escalator model is the gear motor, as mentioned in the introduction.

Q2: What are the three main types of escalators mentioned in the introduction?
(a) Single, Double, Triple
(b) Parallel, Multi-Parallel, Crisscross
(c) Electric, Manual, Hydraulic
(d) Fast, Slow, Medium
Ans: (b) Parallel, Multi-Parallel, Crisscross
The introduction mentions these as the three main types of escalators.

Q3: What is one advantage of escalators mentioned in the text?
(a) They require physical effort to use.
(b) They operate noisily.
(c) They prioritize safety.
(d) They are slower than stairs.
Ans: (c) They prioritize safety.
One of the advantages of escalators mentioned is their safety features.

Q4: Why is wearing safety glasses recommended in the safety tips section?
(a) To improve vision
(b) To protect your eyes from potential hazards
(c) As a fashion statement
(d) To look professional
Ans: (b)
Safety glasses are recommended to protect your eyes from potential hazards during the project.

Q5: Which grade of students is the escalator science project suggested for?
(a) 5th grade
(b) 8th grade
(c) 9th grade
(d) 12th grade
Ans: (c) 9th grade
The text suggests that the escalator science project is suitable for 9th-grade students.

True or False

Short Answer Questions

Q1: What is the main purpose of an escalator?
Ans: The main purpose of an escalator is to provide a convenient and effortless way for people to move between different levels or floors in buildings, such as malls, train stations, and airports.

Q2: Describe the three main types of escalators mentioned in the text.
Ans: The three main types of escalators are:

• Parallel Escalator: Two escalators run in parallel, one moving upward and the other downward.
• Multi-Parallel Escalator: Multiple escalators move simultaneously in both upward and downward directions.
• Crisscross Escalator: Two escalators move in opposite directions simultaneously.

Q3: Explain one advantage and one disadvantage of using escalators.
Ans: Advantage: Escalators efficiently transport a large number of people simultaneously, reducing waiting times. Disadvantage: Overreliance on escalators can contribute to a sedentary lifestyle, as they require no physical effort to use.

Q4: What is the role of the gear motor in the escalator model?
Ans: The gear motor in the escalator model is responsible for powering and controlling the movement of the escalator steps or "stairs."

Q5: Why is it important to conduct the escalator project under adult supervision?
Ans: It is important to conduct the escalator project under adult supervision to ensure the safety of the students, especially when handling tools such as scissors and hot glue guns, and to provide guidance on proper safety practices throughout the project.