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Science 6 Semester 1

QuestionAnswer
Observation act of identifying details of something/someone
Inference conclusion or opinion that is drawn through reasoning (known or assumed)
Prediction to state or tell about in advance (using special knowledge)
Qualitative observations that help provide specifics using your senses (color, shape, texture, smell)
Quantitative observations that involve numbers or amounts (count, weight, measure)
How do you measure a liquid using a Graduated Cylinder? Make sure you are eye level with the level of liquid and read the measurement on the bottom of the curve (meniscus)
How do you measure the volume of an irregular object using a Graduated Cylinder? Using water displacement. Amt of water with object - Amt of water without object = Volume of Object
What system of units to all scientist use to measure and communicate results? Metric System
The basic unit of length meter(m)
Mass Amount of matter in an object
The basic unit of mass kilogram (kg)
Volume Amount of space an object takes up
Steps of the Scientific Method State the problem, Gather Information, Form a Hypothesis, Test the Hypothesis, Analyze the Data, Form a Conclusion, Repeat the Work
Experiments tests done to prove or disprove hypotheses
Control Group used for comparison
Experimental Group used to test the hypothesis
4 Parts of a Lab Problem, Procedure, Observation, Conclusion
Variable any factor in an experiment that changes
Independent Variable (IV) factor that is purposely changed (You change it)
Dependent Variable (DV) factor that changes as a result of the purposely changed factor (The experiment changes it)
Constant any factor in an experiment that is not allowed to change
Levels of independent variable ways the experimenter changes the independent variable
Number of repeated trials how many tiems the experimenter tests each level of independent variable
Scientific Title Format The Effect of IV on DV.
Hypothesis Format If how you change the IV, then how you predict the DV will change.
Direct Proportion If IV increases, then DV increases. If IV decreases, the DV decreases.
Inverse Proportion If IV increases, then DV decreases. If IV decreases, then DV increases.
graph diagram that shows the relationship between two variables
Line graph shows continuous data (Amount, size, concentration, age)
Bar graph show discrete data (kind, type, brand, color)
rotation Earth spinning on its axis
revolution The movement of one object around another object
ellipse oval or elongated circle; shape orbit of the planets
What causes seasons? The tilt of the Earth's axis (tilted towards sun = summer, titled away from sun = winter)
solstice Two days each year when sun is overhead at 23.5 degrees South or North. These are either the longest or shortest days of the year
equinox When neither hemisphere is tilted away from the sun and the days and nights are exactly the same length.
causes of day and night Earth's rotation on its axis
Length of 1 of Earths' roations 24 hours (1 day)
Lenght of 1 of Earth's revolutions around sun 1 year
How does the moon move? It revovles around the Earth and rotates on tis own axis
Causes of the phases of the moon? The positions of the sun, moon, and Earth and how they line up. The moon reflects the sun's light.
8 phases of the moon starting with New Moon New moon, waxing crescent, First Quarter, Waxing Givous, Full Moon, Waning Gibbous, Third Quarter, Waning Crescent
lunar eclipse Earth blocks sunlight from reaching the moon.
solar eclipse Moon blocks sunlight from reaching Earth
Features of the moon? Craters- round pits Highlands- mountains Maria- dark, flat areas that used to be flooded with molten rock
What are the causes of tides? Gravity pulls the moom and the earth towards each other.
Frequences of tides Tides occur every 12.5 hours (2/day)
Moon Exploration Apollo 11- Neil Armstrong first person to walk on moon
Uses of satellites and space stations communication, navigation, collecting weather data and research
Geocentric Theory states that Earth is at the center and planets revolve around Earth.
Heliocentric Theory sates that the sun is at the center and planets revolve around sun.
Views of Aristotle Earth was stationary and everything revovled around Earth (geocentric)
Views of Ptolemy Planets moved in little circles that moved in bigger circles around Earth (geocentric)
Views of Copernicus Believed/proposed the heliocentric theory (sun is center and all planets revolve around sun)
Galileo's Contributions to Heliocentric Theory 1.) Saw 4 moons revolving around Jupiter, 2.) Discovered Venus when through phases like our moon
inertia The tendency of a moving object to continue in a straight lin or a stationary object ot stay in one place
How does the sun get energy? Nuclear fission- hydrogen atoms join together ot form helium.
Layers of sun's atmosphere photosphere, Chromosphere, Corona
Inner Planet Descriptions small, rocky surfaces, called "terrestrial planets"
Name the inner planets Mercury, Venus, Earth and Mars
Outer Planet Descriptions larger, Gas Giants, do not have solid surfaces
Name the outer planets Jupiter, Saturn, Uranus, Neptune
Comet Chunks of ice and dust that orbit in an elliptical shape. "Dirty Snowball"
Asteroid tiny "planets" bur too small and numerous to name.
Location of Asteroid Belt Between Mars and Jupiter
Meteroid Chunk of rock or dust that usually coms from a comet or asteroid
Meterite Meteroid that makes it through Earth's atmosphere and stikes Earth's surface
Meteor streak of light in the sky when a meteroid burns up.
How long does it take the Moon to complete all 8 phases? 29.5 days
Why does the moon appear white? it reflects light from the sun
Which planet is made up mostly of water? Earth
Which planet is closest to the sun? Mercury
Which planet is furthest from the sun? Neptune
In general what happens to the temperature and the lenght of each plant's year as you move from the sun outward? The temperature decreases and the length of the "year" (time to revolve around sun) increases
Created by: jmebuckley on 2011-01-21



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