Sound Barrier Test

Sound Barrier Test
Please fill out your email address in the first box and your name, ISA cert. no. & specialty in the second box. Answer the questions below and when you are finished, press submit.

Email Address :
Name :

Question: 1. Plants can not:
scatter sound waves
absorb sound waves
enhance sound waves
mask sound waves

Question: 2. Criteria to be considered when proposing trees for sound reduction include:
buffer strips of mixed conifer plantings
deciduous plants do not provide a year round noise barrier
shrubs should be planted behind the trees
plants should be planted close to the noise receptor area

Question: 3. Which statement is true:
sound waves will not be redirected from a solid surface
sound waves can not bend
water features will make street noises worse
plants will have minimal effectiveness on sound waves

Question: 4. Soil berms:
work as well as plants alone to block noise
must be located close to the home
are useful only for street noises
must be eight feet tall and 20 feet wide

Question: 5. Barrier walls:
fit well into the highway right-of-way because they are wide.
enhance the scale of the wall.
are being installed along highways where abutting residential communities have problems with noise.
should be planted on the highway side to improve aesthetics.

Question: 6. The best sound barrier tree is:
Bambusa
Acer
Abelia
Nandina

Question: 7. Good sound barrier shrubs include all but:
Callistemon
Quercus
Buxus
Ligustrum

Question: 8. Good sound barrier thorny hedges include all but:
thorny cacti
pyracantha
barberry
hawthorn

Question: 9. Good sound barrier evergreens include all but:
arborvitaes
spruces
hollies
hemlocks

Question: 10. Regardless of the plants selected, they need not be:
thick
hardy
able to adapt
tall

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