Ocean Powered Lesson 3

Logan, David, and Ayden are working on a project to design a new playground for their school. They need to consider certain factors while designing their project. What is a constraint in their design process?

• A limit or restriction on their design, such as budget or space

• The requirements their design has to meet to be successful, such as safety and accessibility

• A type of magnet in which the magnetic field is produced by an electric current

• A machine that generates an electric current by moving a coil of wire inside a magnetic field

Answer explanation

A constraint in design refers to a limit or restriction that is placed on the design process. This could be due to various factors such as budget, time, resources, or specific client requirements. It does not refer to the requirements for a design to be successful, nor does it have anything to do with magnets or electric currents, which are unrelated to the concept of design constraints.

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Giselle and Logan are working on a project together and need to consider certain aspects of their design. What is a criteria in design?

• A limit or restriction on a design

• The requirements a design has to meet to be successful

• A type of magnet in which the magnetic field is produced by an electric current

• A machine that generates an electric current by moving a coil of wire inside a magnetic field

Answer explanation

The question asks about a criteria in design. The correct answer is 'The requirements a design has to meet to be successful'. This is because a design criteria refers to the specific requirements or standards that a design must meet in order to be considered successful. The other options do not accurately define what a design criteria is.

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During a school science fair, Nico and Giselle are working together on a project. They want to build a device that uses an electric current to produce a magnetic field. What are they creating?

• A limit or restriction on a design

• The requirements a design has to meet to be successful

• An electromagnet

• A machine that generates an electric current by moving a coil of wire inside a magnetic field

Answer explanation

An electromagnet is a type of magnet where the magnetic field is produced by an electric current. This differentiates it from a limit or restriction on a design, the requirements a design has to meet to be successful, or a machine that generates an electric current by moving a coil of wire inside a magnetic field. Therefore, the correct answer to the question is that an electromagnet is a magnet produced by an electric current.

David and Logan are working on a science project. They need to choose a machine for their project. Which machine should they choose if they want a generator?

• A machine that imposes a limit or restriction on their design

• A machine that meets all the requirements for their project to be successful

• A machine that is a type of magnet in which the magnetic field is produced by an electric current

• A machine that generates an electric current by moving a coil of wire inside a magnetic field

Answer explanation

A generator is a machine that generates an electric current by moving a coil of wire inside a magnetic field. This is the correct answer because it accurately describes the function of a generator. The other options do not correctly define what a generator is, as they refer to design restrictions, design requirements, and a type of magnet, none of which are related to the function of a generator.

Logan, Nico, and Giselle are working on a school science project. They are trying to build a model volcano but it's not erupting as expected. So, they decide to iterate their steps. What does it mean to iterate in this context?

• To repeat something, such as a set of steps or a procedure, usually in order to get closer to a desired result

• An object with a magnetic field-it attracts magnetic objects towards it

• An early model or design that is created for testing or evaluation

• The force that pushes electrons through a circuit to produce electricity

Answer explanation

To iterate means to repeat a process or a set of steps, typically with the goal of getting closer to a desired result. In the context of the question, the correct choice is the one that describes this process of repetition and refinement, which is the first option provided.

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During a game of treasure hunt, Justin found an object in his backyard. He noticed that Ayden's compass needle was attracted towards it. Based on this, what can Justin conclude about the object?

• Justin is repeating something, such as a set of steps or a procedure, usually in order to get closer to a desired result

• The object is a magnet

• The object is an early model or design that is created for testing or evaluation

• The object is the force that pushes electrons through a circuit to produce electricity

Answer explanation

A magnet is an object that generates a magnetic field, attracting magnetic objects towards it. The other options describe different concepts: repeating a procedure to achieve a desired result, creating an early model for testing, and the force that drives electrons through a circuit. The correct choice is the one that defines a magnet as an object with a magnetic field.

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Logan and Danny are working together on a new model of a robot for their school science fair. They refer to this model as a 'prototype'. What does 'prototype' mean in this context?

• To repeat something, such as a set of steps or a procedure, usually in order to get closer to a desired result

• An object with a magnetic field-it attracts magnetic objects towards it

• An early model or design that is created for testing or evaluation

• The force that pushes electrons through a circuit to produce electricity

Answer explanation

A prototype refers to an early model or design created for testing or evaluation purposes. It is a preliminary version of a product or system, allowing designers and developers to identify and fix issues before finalizing the design. The other options mentioned do not accurately describe what a prototype is.

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David, Genesis, and Nico are working on a school project about electricity. They need to understand the concept of 'voltage' for their project. What is voltage?

• To repeat something, such as a set of steps or a procedure, usually in order to get closer to a desired result

• An object with a magnetic field-it attracts magnetic objects towards it

• An early model or design that is created for testing or evaluation

• The force that pushes electrons through a circuit to produce electricity

Answer explanation

Voltage is the force that pushes electrons through a circuit to produce electricity. It is not about repeating steps, magnetic fields, or early models for testing. Voltage is essential for the flow of electric current in a circuit, and it is the driving force behind the movement of electrons.

Justin, Ayden, and Logan are working on a program to calculate the total number of apples collected by a farmer from his 100 apple trees. What programming concept should they use to achieve this efficiently?

• Iteration to repeat the addition process for each tree's apples from 1 to 100

• Creating a magnetic field that attracts objects

• Designing a prototype for testing or evaluation

• Generating electricity by moving a coil of wire

Genesis is working on a science project about electrical circuits. She needs to explain the concept of voltage. How would you define voltage in this context?

• The force that pushes electrons through a circuit to produce electricity

• An object with a magnetic field that attracts magnetic objects

• An early model or design created for testing or evaluation

• To repeat a set of instructions a certain number of times