Practice the Math Problems 1 & 2 Pg Review Questions Pg. 13

Georgia Performance Standard (GPS) S8P1: Students will examine the scientific view of the nature of matter.

1. A bar of gold is 10 cm long, 5 cm wide, and 7 cm high. What is its volume? 1.First, write the formula: v = l x w x h 2.Next, substitute values for the variables: V = 10 cm x 5 cm x 7 cm 3.Finally, do the math! 10 cm x 5 cm = 50cm 2 x 7cm = 350cm 3

2. What is the volume of a large block of wood that is 1 m long, 0.5 m high, and 50 cm wide? 1.First, make sure all of your measurements are consistent (all in meters). 2. Convert 50 cm to _________________ meters. 3. Figure out which formula to use: v = l x w x h 4. Substitute numbers for the variables in the formula. v = 1m x 0.5 m x 0.5 m v = 0.25 m 3

1.1 Review question 1.Give three examples of matter. a.Air b.Water c.Rock 2.What do weight and mass measure? Weight measures the downward pull on an object due to gravity; mass measures how much matter an object contains.

3.How can you measure the volume of an object that has an irregular shape? Use the water displacement method. Submerge the object in water and subtract the volume of the water before the object was added from the volume of the water and the object together.

4.What is the volume of a box that is 12 cm long, 6 cm wide, and 4 cm high? V = l x w x h V = 12 cm x 6 cm x 4 cm V = 288 cm 3

5.What is the relationship between the units of measurement for the volume of a liquid and of a solid object? Volume of a liquid: liters or mL Volume of a solid: m 3 Conversion: 1 ml of liquid = 1 cm 3 of solid

6.Why might a small increase in the dimensions of an object cause a large change in its volume? Since volume is l x w x h, if you change each of these measurements a little it causes a much larger change in the volume. Ex: length = 2 cm width = 2 cm height = 2 cm volume = 2cm x 2 cm x 2 cm = 8 cm 3 ex: length = 3 cm width = 3 cm height = 3 cm volume = 3 cm x 3 cm x 3 cm = 27 cm 3