Intro to power midterm test

hydroponics is a system that uses

• fish grown in water
• plants and fish grown in water
• plants only, grown in water
• a sustainable plan

A cutting tool that can cut curves is _________

• jig saw and bandsaw
• bandsaw and tablesaw
• table saw and jigsaw
• none of these

It is ok to wear gloves when operating______

• any saw
• any operation in the shop
• a bandsaw
• a planer

It is a safe practice to _____

• hold your hands more than 2 inches from a bandsaw blade
• use a push stick for short pieces of wood
• keep guards in place
• all of these

It is considered unsafe to do the follow___________

• talk to the operators of machines
• leave the shop without permission
• not report injuries
• all of these

A type of fish that can be grown indoors (in greenhouse) is _____

• trout
• salmon
• tiliapia
• none of these

A greenhouse is an environment for ______________

• extending the growing season
• raising plants that may be damaged by frost
• controlling the temperature
• all of these

Why do hydroponic units need electricity?

• A. to run the pump for water
• B. to run the oxygenation unit
• to keep the water warm
• both A. and B.

Turbidity is __________

• A type of fish that have a shorter life span
• water cloudiness
• toxic water
• none of these

A plant that can be used and grown in a hydroponic unit is ____

• A. small shrubs
• B. cucumber and tomatoes
• C. lettuce
• D. both B and C