SpongeBob and Patrick love to go jellyfishing. They wondered if a new brand of jellyfish bait would help them catch more jellyfish. To test their idea, they bought a big container of bait for their next 3 trips to their top-secret fishing spot. SpongeBob fished without any bait, while Patrick used the new bait. Both of them kept track of how many jellyfish they caught in 30 minutes, which is shown in the chart. 1.Which person was the control? 2. What is the independent variable? 3. What is the dependent variable? SpongeBobPatrick

NOVEMBER 12, 2015 Right Now: Collect Notes Skill Sheet Agenda: Notes: Composition of the Atmosphere Objectives: I CAN.. Design and conduct an investigation to determine how the sun drives atmospheric convection.

Chapter 6.1 Characteristics of the Atmosphere

Think about it List the ways that the atmosphere is different from outer space.

The Atmosphere A mixture of gases that surrounds Earth Contains the oxygen we need to breathe Protects us from the sun’s damaging rays

The Composition of the Atmosphere The atmosphere is made up mostly of nitrogen gas. Oxygen makes up a little more than 20% of the atmosphere, while nitrogen contributes 78%.

Atmospheric Pressure and Temperature The atmosphere is held around the Earth by gravity. Gravity pulls gas molecules in the atmosphere toward the Earth’s surface, causing air pressure. Air pressure is the measure of the force with which the molecules push on a surface. It is strongest at the Earth’s surface because more air is above you. As you move further away from the Earth’s surface, fewer gas molecules are above you. As altitude increases, air pressure decreases.

Air temperature also decreases as altitude increases. Lower parts of the atmosphere are warmer because they contain a high percentage of gases that absorb solar energy.

Air Pressure Experiments Balloon in a bottle (Jared) Egg in a bottle (Jared) Egg in a bottle (Sick Science) Blowing paper into a bottle (Sparks) Hole in a bottle (Jared)

Layers of the Atmosphere

The Troposphere: The Layer in Which We Live The lowest layer of the atmosphere, which lies next to the Earth’s surface, is called the troposphere. The Stratosphere: Home of the Ozone Layer The atmospheric layer above the troposphere is called the stratosphere. The Mesosphere: The Middle Layer The mesosphere is the middle layer of the atmosphere. It is also the coldest layer.

The Thermosphere: The Edge of the Atmosphere The uppermost atmospheric layer is called the thermosphere. The Ionosphere: Home of the Auroras In the upper mesosphere and the lower thermosphere, nitrogen and oxygen atoms absorb harmful solar energy, temp rises, gas particles called ions become electrically charged. In polar areas, ions radiate energy as auroras. The Exosphere: the highest region of the atmosphere, where the air density is so low that a fast-moving air molecule is more than 50 percent likely to escape from the atmosphere instead of hitting other molecules.

The Science Monkeys Took Evan MEANS…. Troposphere Stratosphere Mesosphere Thermosphere Exosphere The five layers of The Earth’s atmosphere! Make up your own!

Putting it together Write a poem that creatively yet accurately describes each layer of Earth’s atmosphere.