* Radius of a sphere with the same mass The Shape of Raindrops The common perception that raindrops are teardrop-shaped is wrong. <1mm* 2mm* (Breaks up.

Slides:

Advertisements

Similar presentations

Precipitation I. RECAP Moisture in the air (different types of humidity). Condensation and evaporation in the air (dew point). Stability of the atmosphere:

Advertisements

Precipitation Chapter 7

Are raindrops tear-shaped? Diameter < 2 mm Diameter 2 – 5.5 mm Diameter > 5.5 mm.

Gravity, Friction, and Pressure. Demonstration I’m going to drop a ping pong ball and a golf ball from the same height at the same time. Which one is.

Part 2. Water in the Atmosphere Chapter 7 Precipitation Processes.

1/26/10MET 61 topic 01 1 MET 61 Topic 1 Precipitation Processes.

Shape of a Rain Drop. Formation of Rain The sun heats water and turns it into vapor Water condenses and falls back to the earth in form of rain. Water.

1 Clouds Consider a clean atmosphere with water vapor in it. Dry Atmosphere Water Vapor Given a long enough time, some water vapor molecules will run in.

Shape of Raindrops. Do you think the shape of raindrops like teardrops? Click one of buttons Yes No.

Shape of raindr p MLIM 6323 designed by Beryl & Peon Check it out.

MITE 6323 Daphne Chan and Chris Leung Raindrop ShapeTask 4 What impacts Shape of a raindrop.

Many people will expect the rain drop size should be as follows:

Measuring Gases College Chemistry.

Lecture 7 Flow of ideal liquid Viscosity Diffusion Surface Tension.

Welcome to The Mojave River Wildlands… Water Walk.

A Look into America’s Weather NSF North Mississippi GK-8 Project Created By: Leah Craft Grade Level: 7th.

Weathering and erosion. What is Weathering? Weathering is the breaking down of rocks and other materials on the earth’s surface Weathering is the breaking.

Precipitation Chapter 8 Section 2.

Whiteboard Warmup: AP FRQ from 2005

Ch. 18: “Moisture, Clouds, and Precipitation”

Pressure By: M and J. Definition Pressure- pressure is the effect that happens when force is applied to a surface. There is 14.7 pounds per square of.

What’s Keeping Me Up?. US Air Force C-5 The largest plane in the US Air Force.

Fluids Physics 152. A piece of iron hanging on a string is lowered into a beaker of water on a spring scale, the water level reaches the top of the beaker.

Review of Fluid Properties

Section 5: Precipitation

 The force with which surface molecules are held is called the surface tension of the liquid  It is the force acting perpendicularly.

Water in the atmosphere and precipitation.. Activator Work on project for 10 minutes Or read quietly.

Fluids - Hydrostatics Physics 6B Prepared by Vince Zaccone For Campus Learning Assistance Services at UCSB.

Goal: To understand liquids and gasses Objectives: 1)To understand Pressure 2)To understand Buoyancy 3)To understand Archimedes Principal 4)To learn about.

Why does it rain on us???.  3 cloud properties, 9 ISCCP cloud types  Why do clouds constitute a wildcard for climate change? Competition between greenhouse.

Weather Factors Precipitation Chapter 2 Section 5.

HOMEWORK Application of Environment Spatial Information System HW – Surface Tension Minkasheva Alena Thermal Fluid Engineering Lab. Department of Mechanical.

Density Densities of some common materials SubstanceDensity (kg/m 3 ) Aluminum2700 Bone Water1000 Ice920 Saltwater1025 Blood1050 Gasoline

Solids & Liquids - small distance between particles - slow moving particles.

Chapter 8: Precipitation ATS 572. “Precipitation” Can be: 1.Rain 2.Snow 3.Hail 4.Etc. However, it MUST reach the ground. –Otherwise, it is called “virga”—hydrometeors.

Q14.1 The sphere on the right has twice the mass and twice the radius of the sphere on the left. Compared to the smaller sphere on the left, the larger.

Ch. 8.3 Pressure in Fluids. Pressure pressure – the amount of force applied to a given area – air, just like water, is a fluid (any substance that flows)

Foundation year Chapter 7 General Physics PHYS 101 Instructor : Sujood Alazzam 2015/

Essential Question How do Meteorologist Predict Weather?

Cloud Physics Summary SOURCE:

Weathering  the breaking down of rocks into smaller pieces, mechanically or chemically.

 Anything that has mass and takes up space  Made up of tiny particles called atoms  Atoms: smallest particle of matter.

Shape of a rain drop.

Air Resistance If you drop a feather and a cannonball at the same time, from the same height, which will hit the ground first? The cannonball of course.

Monday, September 24th Science Starter: 1. What does the word phenomenon mean? 2. Now use the word phenomenon in a sentence to describe the whirligig.

Understanding Weather

Chapter 3.3 M BERNOULLI’S PRINCIPLE. Fluid Pressure Decreases as Speed Increases Bernoulli’s principle says that as the speed of a moving fluid increases,

Bernoulli’s Principle

Sci. 3-3 Bernoulli’s Principle Pages A.Bernoulli’s Principle- The speed of a moving fluid increases, its pressure decreases. 1)This causes an imbalance.

L12 - FLUIDS-1 FLUIDS – liquids – gases sand, snow, or grain (granular materials) While kernels of corn are solid, they behave more like a liquid when.

AND THEIR FORCES Fluids. Matter that can flow is called a fluid. “Fluid” does not mean the same thing as “liquid.” Both liquids and gases are called fluids.

Precipitation   Precipitation is any form of water that falls from clouds that reaches Earth’s surface.

23.1 Characteristics of the Atmosphere Meteorology – the study of the characteristics of the atmosphere Weather - the state of the atmosphere at a particular.

Section 2 Air Masses and Fronts Objectives Identify the four kinds of air masses that influence weather in the United States. Describe the four major types.

Gravity and Friction.

Aerodynamics The study of the motion of air, particularly when it interacts with a moving object.

AIR PRESSURE Does air have mass?

Physics 201 : Lecture 23 Fluids Density Pressure

Chapter 12 Section 2.

Chapter 3: Erosional Forces

Precipitation I.

Properties of the Liquid State: Surface Tension

AIR PRESSURE Does air have mass?

Physical Properties of Matter

Period 2 Question 1.

Period 2 Question 1.

Environmental lapse rate = 4°C/km

Chapter 12 Section 2.

Presentation transcript:

* Radius of a sphere with the same mass The Shape of Raindrops The common perception that raindrops are teardrop-shaped is wrong. <1mm* 2mm* (Breaks up into smaller drops) 3mm* >4.5mm* References Move the mouse pointer over each raindrop shape to see more details

* Radius of a sphere with the same mass The Shape of Raindrops The common perception that raindrops are teardrop-shaped is wrong. <1mm* 2mm* In a small raindrop, the surface tension of water molecules is strong enough to pull the drop to form a sphere 3mm* >4.5mm* References

* Radius of a sphere with the same mass The Shape of Raindrops The common perception that raindrops are teardrop-shaped is wrong. <1mm* 2mm* The larger the raindrop, the weaker the surface tension. As a larger raindrop falls faster, air pressure will build up at the bottom of the drop so that the bottom of the drop will be flattened, or even develop a depression. The pressure just above the drop (or called “wake”) is relatively lower so that the top portion of the drop is being “sucked” upwards. 3mm* >4.5mm* References HIGH PRESSURE HIGH PRESSURE LOW PRESSURE LOW PRESSURE Air flow

* Radius of a sphere with the same mass The Shape of Raindrops The common perception that raindrops are teardrop-shaped is wrong. <1mm* 2mm* (Breaks up into smaller drops) When a drop is very large, the surface tension is completely overwhelmed and it can be blown inside out to form “a bag with an annular ring of water and then break up into smaller drops” (Fraser). 3mm* References >4.5mm*

References Cramer, M.S. (2004). The Shape of Raindrops. Retrieved from tutorials/raindrops/raindrop.htm Fraser, A.B. (n.d.). Bad Rain. Retrieved from Heidorn, K.C. (July 1, 2000). Weather Almanac for July Raindrops, So Many Raindrops. Retrieved from /alm00jul.htm U.S. Geological Survey (September 14, 2005). Are raindrops shaped like teardrops? Retrieved from