Shade Balls in Los Angeles Reservoir

What is the main purpose of shade balls in the Los Angeles Reservoir?

• To reduce evaporation

• To prevent bird perching

• To cool the water

• To block sunlight and prevent the formation of carcinogenic Bromate

Why are shade balls black?

• To absorb more energy and heat up the water

• To make them more visible in the reservoir

• To deter birds and wildlife

• To block all light from reaching the water and triggering the Bromate reaction

Tags

NGSS.MS-ETS1-1

What material are shade balls made of?

• Glass

• Metal

• High-density polyethylene

• Rubber

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NGSS.MS-PS1-3

What is the cost of shade balls?

• 1 shade ball for $1

• 10 shade balls for $1

• 100 shade balls for $1

• 3 shade balls for $1

How do shade balls reduce evaporation?

• By absorbing more energy and heating up the water

• By blocking sunlight and preventing the formation of Bromate

• By increasing air flow over the water's surface

• By creating a layer of moist air

What is the purpose of shade balls in relation to algae growth?

• To promote algae growth

• To control algae growth

• To remove algae from the water

• To provide a habitat for algae

What is the shape of the shade balls?

• Round

• Square

• Hexagonal

• Triangular

What is the salvage value of shade balls?

• None

• Half the cost of the balls

• Equal to the cost of the balls

• Double the cost of the balls

What is the effect of shade balls on the temperature of the water?

• They make the water hotter

• They have no effect on the temperature

• They cool the water

• They freeze the water

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What is the impact of shade balls on bird activity in the reservoir?

• Bird activity has increased

• Bird activity has decreased

• Bird activity remains the same

• Bird activity is unpredictable