Name Date Period Metric System Review-LENGTH

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Name Date Period Metric System Review-LENGTH Why is it important as scientists to understand and use the Metric system?

line represents). The longer lines are centimeter marks and the shorter lines are millimeter marks.

How many centimeters (cm) do you think the length of the pencil is? If you said 2.5 cm you are correct!

The pencil was 2 BIG lines (cm) and 5 little linestherefore it measured 2 centimeters and 5 millimeters or 2.5 cm.

1 Name Date Period Metric System Review-LENGTH Why is it important as scientists to understand and use the Metric system? The distance between any of the smaller lines is 1 mm (1 millimeter) Look carefully at your metric ruler Notice the scale (what distance each line represents). The longer lines are centimeter marks and the shorter lines are millimeter marks. The distance between any of the bigger lines is 1 cm (1 centimeter) Look at the pencil and ruler to the right. How many centimeters (cm) do you think the length of the pencil is? If you said 2.5 cm you are correct! Remember each BIG line marks 1 cm and each little line marks 1mm. The pencil was 2 BIG lines (cm) and 5 little linestherefore it measured 2 centimeters and 5 millimeters or 2.5 cm. Notice also, that to measure the pencil, it was placed at the 0 cm mark-not the beginning of the ruler! 1. Measure each screw below using the given metric ruler. cm cm 2. a. Measure the length of each of the snail shells below. I. cm II. cm III. cm b. The average length of these snail shells is a. 2.1 cm b. 2.3 cm c. 2.5 cm d. 2.7 cm 3. Measure the following lines using a centimeter ruler. a. cm mm b. cm mm

2 4. Using your metric ruler, draw a line below that is 3 cm long. 5. Using your metric ruler, draw a line below that is 9 cm long. 6. a. Using your metric ruler, draw a line below that is 30 mm long. b. How does the line you just drew compare to line number 4? 7. How many millimeters are there in 1 cm? 8. How many centimeters are there in 1 meter? USE THE DIAGRAM BELOW TO ANSWER QUESTIONS How many centimeters long is Leaf A? 10. How many centimeters long is Leaf B? 11. How many centimeters longer is Leaf A than Leaf B? 12. How many millimeters long is Leaf A?

Name Date Period /12 MEASURING LENGTH STATION SCIENCE To help practice metric measurement visit each station around the room and measure the object as instructed.

3 Name Date Period /12 MEASURING LENGTH STATION SCIENCE To help practice metric measurement visit each station around the room and measure the object as instructed. The stations do not need to be visited in order. Do not waste time waiting for a station. Measuring must be done quietly and carefully. Measurements must be done in CENTIMETERS (cm) Part I- Use a ruler to measure the length AND width of the items below. DISTANCE-Show units! STATION OBJECT LENGTH (longer side) WIDTH (shorter side) Part II- Use a Meterstick to measure the items below. DISTANCE-Show units! STATION OBJECT LENGTH WIDTH

4 Name Date Period Metric System Review- VOLUME & MASS Volume: Volume is the amount of space an object takes up. Liquid Volume: Liquid Volume is measured with a graduated cylinder in units called LITERS. Milliliters measure small amounts of liquids like a can of soda. (ml) Liters are used for measuring larger things like the amount of gas in a in a car s tank, or the water in a pool. (L) Measuring with a graduated cylinder: 1. Place the Graduated Cylinder on a level surface and read from EYE LEVEL. 2. Notice the surface of the liquid forms a curve in the cylinder, this is called a meniscus. Always read from the bottom of the curve or meniscus. PRACTICE reading the liquid volume in the example graduated cylinders below. a. Volume= b. Volume= Solid Volume of Regular Objects: The Solid Volume can be measured of REGULAR SHAPED objects with measurable sides such as a cube, a box or a room Solid Volume is measured with Ruler in units called CUBIC METERS (m³). Cubic Centimeters measure small regular shaped objects. (cm³) Measuring Solid Volume: 1. Measure length, then width, then height of the cube. 2. Multiply these values together. LENGTH x WIDTH x HEIGHT Practice calculating the solid volume of the boxes below. c. Length d. Volume Width Height Volume Length Width Height Volume

Mass: Mass measures the amount of matter or stuff an item contains. Mass is different from weight. Weight is measured on a scale and measures the pull of gravity on an object.

Object of unknown mass Pointer and zero line Pans Measuring Mass: Mass is measured with a Balance in units called GRAMS.

5 Mass: Mass measures the amount of matter or stuff an item contains. Mass is different from weight. Weight is measured on a scale and measures the pull of gravity on an object. On the moon where there is less gravity than on Earth, we would weigh much less, but our mass would stay the same. Object of unknown mass Pointer and zero line Pans Measuring Mass: Mass is measured with a Balance in units called GRAMS. Milligrams measure the mass of very small things like a dose of medicine or vitamins in food. (mg) Grams are used to measure larger things like the mass of ketchup in a bottle. (g) Kilograms are used to measure even larger things like the mass of a student! (Kg) Using a Balance: 1. Slide all the Riders to ZERO (all the way to the left). Place the object GENTLY in the center of the pan. 2. Slide the riders, one at a time, until the pointer moves to the zero line. (have patience, give it a couple seconds for the beams to stop moving) a. Start with the largest rider first (100 s) and finally the 1 s. b. Make sure the rider is FIRMLY in the notch! c. Add up the numbers the riders are stopped at to get the Mass of your object. d. Return the riders to 0 (zero). E. Measure the Mass of the Book: F. Read the mass on the sample balance below: G. Measure the Mass of the cup of water Be sure to write out the numbers to add them KEEP THE DECIMAL POINTS IN MIND!!! Add: Mass= THINKING FURTHER Mass= g Mass= D. Where would you weigh the most at the beach, at the bottom of a deep mine, or on a mountain top? Explain. E. Would your mass be different in each location? Explain.

6 Mass: Mass measures the amount of matter or stuff an item contains. Mass is different from weight. Weight is measured on a scale and measures the pull of gravity on an object. On the moon where there is less gravity than on Earth, we would weigh much less, but our mass would stay the same. Measuring Mass: Mass is measured with a Balance in units called GRAMS. Milligrams measure the mass of very small things like a dose of medicine or vitamins in food. (mg) Grams are used to measure larger things like the mass of ketchup in a bottle. (g) Kilograms are used to measure even larger things like the mass of a student! (Kg) Using a Balance: 3. Slide all the Riders to ZERO (all the way to the left).place the object GENTLY in the center of the pan. 4. Slide the riders, one at a time, until the pointer moves to the zero line. (have patience, give it a couple seconds for the beams to stop moving) a. Start with the largest rider first (100), then the 10; s and finally the 1 s. b. Make sure the rider is FIRMLY in the notch! c. Add up the numbers the riders are stopped at to get the Mass of your object. d. Return the riders to 0 (zero). A. Measure the Mass of the Book: B. Read the mass on the sample balance below: C. Measure the Mass of the cup of water Be sure to write out the numbers to add them KEEP THE DECIMAL POINTS IN MIND!!! Add: Mass= THINKING FURTHER Mass= g Mass= D. Where would you weigh the most at the beach, at the bottom of a deep mine, or on a mountain top? Explain. E. Would your mass be different in each location? Explain.

The Metric System. Most scientists use the metric system when collecting data and performing experiments

The Metric System. Most scientists use the metric system when collecting data and performing experiments Scientific Measurement The Metric System Most scientists use the metric system when collecting data and performing experiments The Metric System Most scientists use the metric system when collecting data