Grade 4 quiz

1. What is a robot?

• •  A type of computer game

• • A machine that can be programmed to perform tasks autonomously

• A type of bicycle

• •  A musical instrument

1. What is the purpose of a sensor on a robot?

• To detect light, sound, or other information from the environment

• • To play music

• To fly in the air

• •  To clean floors

1. What does STEM stand for?

• •  Study, Technology, Electronics, Mathematics

• • Science, Tools, Engineering, Machines

• •  Science, Technology, English, Mathematics

• • Science, Technology, Engineering, Mathematics

Which operator is used to add two numbers in Java?

• *

• • -

• • +

• • /

1. What is the main function of an actuator in a robot?

• • To provide power to the robot

• • To convert electrical energy into motion

• • To process data

• • To store information

1. Which of the following is a programming language commonly used in robotics?

• • JAVA

• • HTML

• • CSS

• • SQL

1. Which component of a robot would you use to make it light up?

• • Motor

• • Battery

• LED (Light Emitting Diode)

• • Sensor

1. What are the basic units of coding called?

• • Words

• • Commands

• •  Letters

• •  Numbers

What does it mean to 'debug' your code?

• To find and fix problems in your code

• To enable precise control

•  To detect  other information

• To give your name

Which keyword is used to define a class in Java?

• class

• define

• object

• function