Unit D Weather and Space
Experiments 363, 379, 393,
- The Scientific Method pgs. 2
- Make an observation
- Ask a question
- Form a hypothesis
- Test your hypothesis
- Record results
- Supports hypothesis
- Doesn’t support hypothesis
- Draw a conclusion
- Ask more questions
- The Atmosphere and Weather Lesson 1 pg. 362
- Insolation
- Solar energy that reaches a planet
- Equator
- Imaginary runs around Earth’s middle
- Troposphere
- Layer of gases closest to Earth’s surface
- Weather
- Condition of the troposphere at a particular time and space
- Hot or cold
- Wet or dry
- Calm or stormy
- Sunny or cloudy
- Air pressure
- Force put on a given area by the weight of the air above it
- Volume
- Measure of how much space an object takes up
- Temperature
- Air is heated the gas particles speed up and spread out
- Altitude
- Height above earth’s surface
- Measured from sea level
- Humidity
- Amount of water vapor in air
- Latitude
- North or South of the equator
- Longitude
- Place east or west
- Barometer
- Measures atmospheric pressure
- Anemometer
- Measures wind speed using cups that rotate when the wind blows
- Weather vane
- Shows which way wind is blowing
- Clouds and Precipitation Lesson 2 pg. 378
- Cirrus
- Form at the highest altitudes
- From ice crystals when water vapor is below freezing point
- O degrees C
- 32 degrees F
- Cumulus
- Puffy clouds form from water droplets at middle altitudes
- Stratus
- Layered form at lower altitudes
- Fog
- Temp near ground is cold water vapor forms
- Forms of precipitation
- Hail
- Raindrops collide w/ bits of ice severe thunderstorms
- Sleet
- Raindrops fall through layers of very cold air near ground
- Tiny bits of ice
- Snow
- Air temp is close to or below freezing
- Air mass
- Large region of air that has similar temps and humidity
- Front
- The meeting place between two air masses
- Low pressure system
- Large air mass w/ low air pressure in the center
- High air pressure
- Large air mass w/ highest air pressure in the center
- Weather map
- Shows weather in a specific area at a specific time
- Meteorologist
- Scientists who study earth’s atmosphere & weather
- Severe Storms Lesson 3 pg. 392
- Thunderstorm
- Rainstorm that includes and thunder
- Lightning
- Spark from the discharge of electricity
- Raises temp of air around it
- Particles rubbing against rain moving up or down
- Blizzard
- Snowstorm w/ 56 mph winds and can’t see farther than ¼ mile
- Ice storms
- Warm front approaches a cold air mass
- Freezing rain forms a layer of ice on outside surfaces
- Tornado
- Rotating funnel cloud w/ wind speeds up to 300 mph
- Hurricanes
- Wind speed of storm is 74 mph
- Rains from tropical storms
- Eye is the center of low pressure area
- Storm surge
- Causes water levels to suddenly rise or surge several meters
- Cyclone
- Any storm w/ low pressure center starts circular pattern of winds
- Climate Lesson 4 pg. 406
- Climate
- Average weather of a place
- Usually for a season’s time
- Includes average temp and average rainfall
- Currents
- Constant movement of ocean waters
- Rain shadow
- Dry area on leeward side of mountains
Chapter 8 The Universe pg. 418
Experiments 421,
- Earth and Sun Lesson 1 pg. 420
- Gravity
- Force of attraction or pull between any two objects
- Affected by distance between two objects
- Their masses
- On the moon your mass is 6 times less
- Orbit
- The path one object takes around another object
- Planets held in orbit around sun by gravity
- Inertia
- Tendency of a moving object to keep moving in straight line
- Earth orbits sun
- Distance between sun and earth is 91-94 million miles
- Revolution
- One complete trip around the sun
- Takes 365 ¼ days to do
- Axis
- Imaginary line runs through earth between North and South Poles
- Rotation
- Complete spin on axis done every day or 214 hour period
- Tilt of the earth determines length of day’s sunlight and darkness
- Sun rises in the east, sets in the west
- Earth and Moon Lesson 2 pg. 430
- Neil Armstrong 1st man to walk on moon July 20, 1969
- Moon
- Has no atmosphere, no winds no weather
- Phase
- Appearance and shape as you see it
- It takes 29.5 days for moon to reach its same phase
- First quarter
- New moon
- Last quarter
- Full moon
- Solar Eclipse
- Moon passes directly between earth and sun
- Casts shadow down on earth
- People see darkness move across sun
- Lunar eclipse
- Moon moves into earth’s shadow and no longer reached by direct sunlight
- During full moon phases only happens
- Tide
- The rise and fall of the ocean’s surface
- Neap tides
- Sun and moon pull in different directions
- Low tides are higher than normal
- High tides are lower than normal
- Spring tides
- Higher high tides
- Lower low tides
- Moon and sun pull in same direction
- The Solar system Lesson 3 pg. 440
- Telescope
- Instrument makes distant objects seem larger and nearer
- Hubble Space Telescope in 1990
- Detects heat from objects in space
- Planet
- Large object that orbits a star
- Inner planets-Mercury, Venus, Earth, Mars,
- Outer planets- Jupiter, Saturn , Uranus, Neptune
- Pluto, Ceres, Eris are now dwarf planets
- Venus is closest to Earth in being the same
- Moon
- Natural object orbits a planet
- Satellites
- Object in space that circles around another object
- Artificial satellites
- Weather ones, space probes
- Comet
- Mixture of frozen gases, ice, dust and rock that moves in n elliptical orbit around sun
- Asteroid
- A rock that revolves around the sun
- Meteors
- Object enters earth’s atmosphere
- Burns up before it hits the earth’s surface
- Meteorite
- A meteor that lands on the earth’s surface
- Creates a crater
- Space Probes
- Vehicle carrying instruments that is sent to explore objects in space
- Spirit, Opportunity, New Horizons, Dawn
- Stars and the Universe Lesson 4 pg. 456
- Star
- Characterized by size, color, temperature
- Object that produces its own energy including heat and light
- End when done giving energy
- Nebula
- Huge cloud of gases and dust
- Pro star
- Beginning star
- 18,000,ooo degrees F combine w/ hydrogen atoms
- Red Giant
- Many times larger than original star
- White dwarf
- Small very dense star shines w/ a cooler white light
- End of medium size star’s cycle
- 10 billion years pass between cycle
- Super Nova
- Shines brightly for days or weeks then fades
- Exploding star
- Black Hole
- Object so dense, powerful gravity
- nothing can escape even light
- Sun
- Medium size yellow star temp 11,ooo degrees F
- Neutron
- Smallest stars
- Constellation
- Patterns of stars in the sky (88 of them)
- Animals, characters from stories, or familiar objects
- Big dipper, little dipper,
- Light-Year
- Distance light travels in a year (5.9 trillion miles)
- Galaxy
- Huge collection of starts
- Spiral in shape
- Milky Way
- More than 200 billion stars
- Elliptical
- Shaped like an egg or thick pancake
- Irregular galaxies
- No distinct shapes