No School MLK Day

Do Now 1/19 1.Fill out your planner. 2.Take out WC 17 3.Read pages in your textbook. GOGGLES TODAY MondayTuesdayWednesdayThursdayFriday -No school today -Study Knowledge Map -WC 17 #9- 17 (1/21) -WC 17 ALL (1/22) -No HW and no school Monday

Cold Air Meets Cold Air

Warm Air Meets Warm Air

Cold Air Meets Warm Air

Lab Roles Lab Roles: – Clubs: Project manager makes sure the group fully understands the lab procedures and keeps the group on task. – Spades: Materials manager collects the materials, makes sure they are well taken care of during the lab, and are put away correctly at the end of the lab. – Diamonds: Data manager makes sure all data is collected and recorded on the lab sheet. – Hearts: Safety manager makes sure the group knows all the safety issues in the lab and follows them throughout the whole lab.

Safety Fire Safety: Tie back hair and loose clothing Careful with the lit punk sticks Goggles must be warn the whole lab.

Clean Up 1.Do no clean up until Mr. Summers and seen your hot and cold setup. 2.Blow out both candles 3.Put out the punk stick by running it under the water in the sink. 4.Leave cold water as is. 5.Return to your seats and work on the rest of the lab.

HW: -Study Knowledge Map PUSH IN YOUR CHAIR!!! Reminder

Do Now 1/20 1.Prepare for learning check #11 on p71

Learning Check #11 1.Write score on top of page 71 2.Write Score on sheet for INBOX 3.Graph score on NB p4

4. Cold Air Meets Cold Air No air movement occurs because both convection tubes are the same temperature.

5. Warm Air Meets Warm Air No air movement occurs because both convection tubes are the same temperature.

Why Wind Blows Convection Current Surface Winds! Upper Level Winds! 6. Cold Air Meets Warm Air The air over the candle warms, becomes less dense, and rises. The cool, dense air from the ice moves over to replace the rising warm air.

Explain these phenomena on the white board provided THINK: start state, end state, process & thermal energy (+ or -)

-HW: Complete WC 17 #9-17 PUSH IN YOUR CHAIR!!! Reminder

Do Now 1/21 1.Take out a correcting pen and WC 17 2.Add these questions to page 70 of your notebook: How do the atmosphere and geosphere interact to produce wind? What is air pressure? Warm air creates an area of ____________ pressure. Cold air creates an area of _____________ pressure. Why are they named ‘land breezes’ or ‘sea breezes’?

Up, up, and away

Do Now How do the atmosphere and geosphere interact to produce wind? Uneven heating of land and water create air masses with different temperatures and pressures. What is air pressure? The amount of force that air in the atmosphere puts on an object. Warm air creates an area of _LOW__ pressure. Cold air creates an area of ___HIGH_____ pressure. Why are they named ‘land breezes’ or ‘sea breezes’? They are named for the direction they come from.

Convection Notes on back of lab A convection current is the movement of gas or liquid due to temperature differences. As the gas or liquid warms it becomes less dense, and rises. Then cooler, more dense gas or liquid will move to replace the rising warm gas or liquid creating a current known as a convection current.

Density: the degree of compactness of a substance.

High densityLow density

WC Why do sea breezes generally occur during the day (mostly in the afternoon)? – Sea breezes occur in the afternoon because the land warms faster than the water, so cooler, _______ air from above the water rushes in replace the warmer, _________ air rising over the land. denser less dense

WC Why do land breezes generally occur during the night and early morning? – Land breezes occur in the night because the land cools faster than the water, so cooler, _______ air from above the land rushes in to replace the warmer, _________ air rising over the water. denser less dense

WC Why do Global winds want to blow from the poles to the equator? – Global winds blow from the poles to the equator because the warmer, ____ _ air at the equator rises and the cooler, _____ air at the poles sinks. The air from the poles moves towards the equator to replace the warm air as it rises. denser less dense

Light is weakened Cool surface temperature Light is weakened Cool surface temperature Light is strong Warm surface temperature

Cool surface temperature Warm surface temperature Convection Current Why don’t we have giant convection currents like in this picture?

Coriolis effect For each elbow partner get one piece of scrap of paper and a pencil. One person will be the wind One person will be the Earth Wind slowly draw a straight line across the paper At the same time Earth slowly rotate the Earth (the paper) on is axis.  What happened to the wind?

Coriolis Effect

Global winds 13. Name the 3 winds in the northern hemisphere. – Westerlies – Easterlies – Trade winds 14. Which two convection currents meet near Washington? – Easterlies – Westerlies

15. What happens when two major convection currents (winds) meet? – Weather changes occur where two convection currents meet. 16. What is a jet stream and what does it do? – The jet stream is a constant tube of wind that moves the air masses around the Earth.

Jet Stream Cooler air Warmer air

Polar Jet Stream Cold Warmer Warmest Sub- tropical Jet Stream

HW: WC 17 All PUSH IN YOUR CHAIR!!! Reminder

Do Now 11/22 1.Swap notebooks and grade WC 17 2.Summarize WC 17 with your table group and be ready to report out. 3.Take out a correcting pen. 4.Check to insure each question has been answered completely.

How can we engineer our home to work with the natural water cycle so that we can sustain human water use well into the future? Weather & Climate: Scientific Principles WC 13: The water cycle is the processes by which water circulates between the earth's oceans, atmosphere, and land. WC 14: In the water cycle water changes state due to a change in energy. The processes are called evaporation, transpiration, condensation, and sublimation. WC 15: Water heats slowly and cools slowly. Soil heats fast and cools fast. WC 16: Air takes on the temperature and humidity of the land below it. WC 17: Wind is created by hot air rising and cold air sinking in the atmosphere creating a convection current.

Recall - What is a jet stream and what does it do? – The jet stream is a constant tube of wind that moves the air masses around the Earth.

Jet Stream Cooler air Warmer air

Polar Jet Stream Cold Warmer Warmest Sub- tropical Jet Stream

Answers to Selected Questions On a hot summer day, can you explain why concrete feels hot under your feet while water in a pool feels cold? – Concrete, like soil, heats up faster on a hot day than the water. That makes it hotter than the water during the day.

WC 18 1.Diamonds collect WC 18 for your table group. 2.Cut and tape WC 18 on page 73 3.Complete learning target and first thoughts: 4.Update Table of Contents

How do we forecast the weather?

Now In your table groups work on question 1 on WC 18. What are the common elements found in a weather forecast?

HW: No HW PUSH IN YOUR CHAIR!!! Reminder