1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
luda_lava [24]
3 years ago
6

The density wave theory suggests that the spiral arms of the Milky Way Galaxy are the result of a ____ wave moving around the Ga

laxy.
Geography
1 answer:
Alexxx [7]3 years ago
7 0
The density wave theory suggests that the spiral arms of the Milky Way Galaxy are the result of a Spiral Density Wave moving around the Galaxy.
You might be interested in
Marcus is taking a hiking trip in the mountains. he sees long scratches on the rock walls. the area was most likely eroded by a
Reil [10]
The correct answer is a glacier.
8 0
4 years ago
Read 2 more answers
The was a time of great political unrest that divided europe into eastern and western sections.
hichkok12 [17]
The answer is the Cold War
8 0
3 years ago
Do you think the earth has more or less water than thousands of years ago
Anna007 [38]

We have less water bc of the countries going into aquifers that took nulliibs of years to aquire but are dipliating them quicker than can be replaced.

4 0
3 years ago
How we could get people to turn off the lights in empty skyscrapers at night?
Svetlanka [38]
As I sat looking out at the city from Darling Harbour the other night, I noticed that nearly all the floors of the big office buildings had their lights ‘on’.

I compared the office buildings to large hotels and apartment buildings that had many of their lights ‘off’— obviously because people occupying those rooms and units turn the lights off when they’re not there. That makes absolute sense, doesn’t it? So why isn’t this same common sense not followed in office buildings?

I started doing some research online to find out. In this day and age when everyone is so conscious of the need to save energy in an effort to reduce carbon emissions, I thought surely there is a perfectly valuable and logical explanation to why all these lights are left ‘on’ at night.

To my surprise, this is what I found from various articles and blogs:

Office cleaning
Building security
Safety — so airplanes don’t hit the buildings
Surely cleaners don’t clean every floor at once all night long, not all lights need to be kept on for security reasons, and high-rise buildings have red blinking antennas on the roof to prevent planes from hitting them. These reasons weren’t convincing, so I dug a little deeper.

I found a study on overnight lighting in London’s non-domestic building stock by the Worcester Polytechnic Institute. Unfortunately, it explained that the data collected “did not provide reasons for overnight lighting”. However, the study did examine literature that suggests the following possible causes:

Diffusion of responsibility to others and authorities
People forget to turn lights off because they are stressed
Lack of motivation
Are diffusion of responsibility, forgetfulness due to stress and lack of motivation proper reasons for most city office buildings to be wasting so much energy every night?

If these truly are the reasons for leaving office building lights on, then the solution is simple ... let’s take responsibility and do something about it.

Take Action

You might work in one of those tall, bright buildings that shine at night. Why not take action and see if you can get the lights turned off on your floor or in the entire building. Here are some suggestions:

Talk to your manager, director, or CEO and ask them to encourage everyone to turn off the lights when they leave at the end of the day (as well as their computers and screens).
Talk to security and building services to ask if the security guards can turn any remaining lights off during their rounds once everyone is gone OR the office buildings could pay for someone to go through each floor turning off lights after everyone has left to eliminate the “I’m leaving them on for someone” excuse.
4 0
3 years ago
How did Russia's climate lead to the death of the German army's invasion during World War 2?
disa [49]
What the guy on the top said
8 0
3 years ago
Other questions:
  • Which of the following is most likely to be the direct result of lack of genetic diversity in a food crop such as corn?(A) Decre
    10·1 answer
  • A process that directly describes the growth of cities is
    8·2 answers
  • Due to decreased light penetration, which area of rivers and streams will have less diversity of plant life?
    7·2 answers
  • Why do different people use different navigation systems?
    10·1 answer
  • What is terracotta and what is its uses
    13·1 answer
  • What is a mineral reserve?
    9·1 answer
  • Many bodies of water in this region are very important for transportation. This is due to the fact that this region is the
    8·1 answer
  • A, B, C, and D are four villages, as shown. No road exists now. Govt has alloted money to construct road connecting all four vil
    7·1 answer
  • Why fossil fuel is called outcome of solar energy​
    7·1 answer
  • What is the difference between a bomb cyclone and a hurricane
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!