Transcript Document
Chapter 1- The Nature of Science For the first page in your notebook, illustrate what you think science is! How do we “do” science? Scientific Method State the problem Gather information Form a hypothesis/state the research question Variables: dependent, independent Constants and controls Test the hypothesis Analyze data Draw conclusions Bias-occurs when what the scientist expects changes how the results are viewed. Complete the flip chart on scientific method in your notebook! Law vs. Theory –a theory can be used to explain a law! Theory Law Explanation of things or A statement about what events based on knowledge gained from many observations and investigations. NOT a guess! CAN be modified! Examples: Big Bang happens in nature that seems to be true all the time. They do NOT explain why. Examples: gravity Measure up! Precision Accuracy How closely measurements Compares a measurement are to each other and how carefully measurement are made. to the real or accepted values. Measurement-SI Units Based on multiples of 10 Standard is the kilogram kept in France! Meter is base unit of length Second is base unit for time Kelvin is base unit for temperature QUIZ! Write the answers in your notebook. A gram is about the size of a (apple, dime, pineapple)? A meter is about the height of a (door, counter, seat)? Water freezes at _____C and boils at _________C. The height of a tall man is about 200 ____. Normal body temperature is ____C The thickness of a dime is about ________mm Metric Prefixes Copy Mega to nano in your notebook Converting Metric to Metric Video Conversion between metric units | Metric system unit conversion | Khan Academy Dimensional Analysis A conversion factor is a ratio that is equal to one and is used to change one unit to another . Homework! Find your favorite recipe. Convert from English units to metric Turn in both the English recipe and metric version! Volume Volume-the amount of space occupied by an object V=l x w x h 1mL = 1 cm(cubed) Mass Mass- is a measurement of the quantity of matter in an object. Density- is the mass per unit volume of a material Measured in a derived unit: g/cm(cubed) Create a density column in your notebook! Temperature Celsius 0, 100 Body temp is 37 Fahrenheit 32, 212 Body temp is 98.6 The SI unit for temperature is Kelvin (K) 0 is coldest possible temp also known as Absolute Zero. (-273 C!!) Water boils at 373 K Graphs A graph is a visual display of information or data Line graph-can show any relationship where the dependent variable changes due to a change in independent variable. Bar graph-comparing information Circle graph-shows how some fixed quantity is broken down into parts.