1,308 Answered Questions for the topic physical science

Physical Science

08/07/19

A car travels 500 miles east in 10 hours. What is the velocity of the car?
Follows • 1
Expert Answers •1

08/07/19

Why do certain areas on Earth have a higher or lower air pressure at sea level?
For instance, looking at [this map of world air pressure in January](http://www.mapsofworld.com/world-maps/wind-and-pressure-jan-enlarge-map1.html) and [this map of... more
Follows • 1
Expert Answers •1
Physical Science Meteorology Atmosphere Clouds

08/06/19

What determines how fast clouds move?
Do cirrus clouds in the upper troposphere move faster than cumulus and stratus clouds in the lower atmosphere? What about clouds associated with extratropical systems, compared with clouds in the... more
Follows • 1
Expert Answers •1
Physical Science Wind Meteorology Scaling

08/06/19

Sea breeze - magnitude of horizontal pressure gradient?
What is the range of horizontal pressure gradients typically caused by the differential heating of land and water under sea breeze conditions?
Follows • 1
Expert Answers •1

08/05/19

Can an Atlantic hurricane enter Mediterranean sea?
I can't find any examples, has it just never happened before or is it impossible because of environmental factors?
Follows • 1
Expert Answers •1
Physical Science Meteorology Cyclone Synoptic

08/04/19

What are the key differences between warm and cold core cyclones?
What are the key differences between warm and cold core cyclones? What is an example of each?
Follows • 1
Expert Answers •1

08/04/19

Synoptic weather predictibility under climate change scenarios?
Under climate change scenarios, it is quite certain that high latitude regions will experience more warming than at low latitudes. For example, in winter the reduced area of sea ice and snow cover... more
Follows • 2
Expert Answers •1
Physical Science Forecasting

08/03/19

What is forecasting and why is it important?
Follows • 1
Expert Answers •1
Physical Science Forecasting

08/03/19

What is forecast in logistics?
Follows • 1
Expert Answers •1
Physical Science Forecasting

08/03/19

What is the difference between qualitative and quantitative forecasting?
Follows • 2
Expert Answers •1
Physical Science Meteorology Dynamics Synoptic

08/03/19

Are the "polar vortex" and "cut-off lows" over/near the Great Lakes new phenomena?
In recent years, I've heard weather reporters describe "cut-off" low pressure systems which park over Southern Ontario for days at a time. In summer months, they bring us long stretches of cool... more
Follows • 1
Expert Answers •1
Physical Science Meteorology Mountains

08/03/19

Why is the diurnal temperature range on the Cascade volcanoes so small?
Ski-mountaineering in the Pacific Northwest I am frustrated that the snow pack isn't refreezing at night. There is about a 20F difference between the day and night temperatures in Seattle. Looking... more
Follows • 2
Expert Answers •1
Physical Science Meteorology Thunderstorm

08/02/19

Propagation of sound after lightning?
In an area of frequent thunderstorms, I notice a 'crack or whoosh' sound if a strike is nearby but little or no thunder. Yet I can hear for 30 seconds or so after a distant flash when the thunder... more
Follows • 1
Expert Answers •1
Physical Science Seasons Meteorology Clouds

07/30/19

Is there a seasonal difference in the average cloud floor?
It always looks like clouds are so much higher in the sky (altitude) in the summer than in the winter. Is that true? If not, is there some sort of optical illusion? If so, why is that? I live in... more
Follows • 2
Expert Answers •1
Physical Science Geology Wind Geomorphology

07/29/19

The grains of the parabolic dunes?
My text book says that parabolic dunes consist of consolidated limestone grains, but I wondered if they have sand grains too, so I googled this issue and found that they consist of sands, but I am... more
Follows • 1
Expert Answers •1
Physical Science Geology Volcanology

07/29/19

The position of magma chambers?
Where do magma chambers exist? Is it necessary that they exist in the asthenosphere where the circumstances of temperature and pressure are suitable for the rocks to be molten? Or they exist in... more
Follows • 1
Expert Answers •1
Physical Science Meteorology Atmosphere

07/29/19

Are there any quantities defined analogically to the virtual temperature, but for other gases?
The [virtual temperature](https://en.wikipedia.org/wiki/Virtual_temperature) is a pseudo-temperature taking into account water vapour in the atmosphere in such a way, that the resulting quantity... more
Follows • 2
Expert Answers •1
Physical Science Science Astronomy

07/28/19

What is the Big Bang
Follows • 1
Expert Answers •1

07/27/19

Why are there different vertical gradients of temperature in different layers of the atmosphere?
The temperature of the troposphere decreases with altitude whereas it is opposite in the stratosphere and again fluctuates. Why is this so?
Follows • 2
Expert Answers •1

07/26/19

What is the difference between an inertial instability and a symmetric instability?
Inertial and symmetric instabilities are fluid instabilities present in atmosphere and ocean. What are the difference between an inertial instability and a symmetric instability?
Follows • 2
Expert Answers •1
Physical Science Meteorology Thunderstorm

07/26/19

St. Elmo's Fire not dangerous?
I know that St. Elmo's Fire is a form of plasma that occurs during thunderstorms that is similar to lightning because it is formed by a difference in charges. But why isn't it dangerous if St.... more
Follows • 2
Expert Answers •1
Physical Science Forecasting

07/26/19

What are the four factors of weather?
Follows • 1
Expert Answers •1
Physical Science Weather Tsunami

07/26/19

Why does every tsunami travel differently?
Tsunamis are quite interesting, as they only happen after a large displacement of water. Usually, the waves travel quite weirdly. Sometimes there are waves which bounce off of land and go back to... more
Follows • 1
Expert Answers •1
Physical Science Weather Climate Meteorology

07/25/19

Is the urban heat island effect stronger during a particular season or part of the year?
It is known that cities tend to be warmer than the surrounding landscapes, and this is known as the "urban heat island effect". In the summer there is greater heat output from air conditioning... more
Follows • 2
Expert Answers •1
Physical Science Geology Earthquakes Geophysics

07/24/19

Is there any case that changed from earthquake safe zone to danger zone?
Is there any case that changed from earthquake safe zone to danger zone? As plates move, I think that earthquakes belt will change over time. But is there really a case in which the earthquake-safe... more
Follows • 1
Expert Answers •1

Still looking for help? Get the right answer, fast.

Ask a question for free

Get a free answer to a quick problem.
Most questions answered within 4 hours.

OR

Find an Online Tutor Now

Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.