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7 th Grade Science. Science Tools . State Standards. 0707.Inq.2 - Select tools and procedures needed to conduct a moderately complex experiment. What does this mean? In science, you will need to be able to choose the tools needed to perform specific tasks in an experiment.
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7th Grade Science Science Tools
State Standards • 0707.Inq.2 - Select tools and procedures needed to conduct a moderately complex experiment. • What does this mean? In science, you will need to be able to choose the tools needed to perform specific tasks in an experiment.
Graduated Cylinder • This is used to measure the volume of liquids, or volume of an irregular shaped solid. • The SI unit for volume is liter (for liquids) or cubic meter (for solids). • When measuring volume of liquids, get eye level and always use the eye protection. (Liquids could splatter up into your eyes.) • How could we use this tool in an experiment?
Balance • It is used to measure the mass of an object. Mass = How much matter is in an object. • The SI unit for mass is the gram (g), but kilograms (kg) could be used for larger objects such as a boulder. • How could we use this tool in a controlled experiment?
Thermometer • It is used to measure temperature, which means how hot or cold something is. • The SI unit for temperature is the Kelvin (K), but we commonly use degrees Celsius. • In the United States, we use degrees Fahrenheit, which is not commonly known throughout the world. • What kind of experiment might use this tool?
Meter stick • It is used to measure length of objects. • The SI unit for length is the meter (m). • You can use this tool to find the distance from point A to point B. • You can also use this to find the area of a surface, or the volume of a 3-dimensional regular object, such as a box of tissue. • Could you think of a way to use this tool in gathering data?
Spring Scale • It is used to measure force of an object (how much force is needed to lift an object). • The SI unit used to express force is the Newton (N). • Some people use the word weight instead of force. • When might we use this tool?
Stopwatch • It is used to measure time. • How could we use this in a controlled experiment? • The SI unit for time is the second (s). • What could we use this tool for during an scientific investigation?
Important Formulas • Area is a measure of the size of the surface of an object. You find it by length times width . A = L x W • Volume of a 3-dimensional object, such as a box, is the size of a body in a 3-dimensional space. You find it by length times width times height. V = L x W x H • Density is the amount of matter in a given volume. Density is mass divided by volume. D = M/V.
Organizing Data • After collecting data, you must analyze the data. • Calculators, computers, pencil and paper are tools to help you analyze the data. • Graphs and tables are ways to show your data.
Let’s wrap it up! • Tools can be used to measure things. These measurements can be used for data and for analyzing results. • Each tool has a specific use and has specific units to represent the data. (Ex: 100 grams or 30 seconds) • Formulas may be used in science to gather data. • Math and Science are related. • Now, can you tell me at least one way that these two subjects go hand in hand?