VEX VR Unit 7 Exam

Which of the following is the best description of what the Eye Sensor does?

• It reports the (X,Y) position of the VR Robot.

• It reports the distance between the VR Robot and the nearest solid object.

• It can be controlled to pick up and drop disks with metal cores.

• It detects if there is an object present and if so, the color of that object.

Tags

NGSS.MS-LS1-8

Which two sensors are being pointed to on the VR Robot?

• The Left and Right Bumper Sensors.

• The Front Eye and Down Eye Sensors.

• The Electromagnet and Location Sensors.

• The Distance and Front Eye Sensors.

What value will the Boolean block report when the Eye Sensor is close to an object that has detectable colors?

• It will report TRUE.

• It will report FALSE.

• It will report how far in millimeters (mm) or inches the Eye Sensor is from the object.

• It will report the location angle of the VR Robot in degrees.

What value will the Boolean block report when the Eye Sensor detects a different color than the one that was selected?

• It will report the time elapsed of the project in seconds.

• It will report the current heading in degrees of the VR Robot.

• It will report FALSE.

• It will report TRUE.

Describe how the VR Robot is using the Down Eye Sensor in this project.

• To draw on the Playground.

• To measure the distance to the blue disk.

• To solve a maze.

• To identify when the VR Robot is above a blue disk.

What will happen when the Front Eye Sensor detects red in this project?

• The VR Robot will stop driving.

• The VR Robot will turn left for 90 degrees.

• The VR Robot will drive forward.

• The VR Robot will check the Front Eye Sensor repeatedly.

What is the purpose of having multiple [If then] blocks in this project?

• To have the Electromagnet Sensor pick up and place disks.

• To be able to have the Down Eye Sensor check for the color red.

• To have the Distance Sensor report how far the VR Robot is from an object.

• To have the Front Eye Sensor check for each color and have the VR Robot perform a discrete behavior depending on the color detected.

In this project, if the condition of the Down Eye detecting red is TRUE, how will the VR Robot move?

• It will turn right for 115 degrees.

• It will drive forward forever.

• It will turn left for 115 degrees.

• It will stop driving.

Tags

NGSS.MS-PS2-1

In this project, how many times will the [Drive] block be repeated?

• It will be repeated forever.

• It will repeat 100 times.

• It will repeat 90 times.

• It will repeat once.

Describe why a [Forever] block is used in this project.

• To continuously check if the VR Robot Pen is up or down.

• To continuously check if the VR Robot is near an object with detectable colors.

• To draw the color blue with the VR Robot Pen.

• To report if the Bumper Sensors are being pressed.