Finding Mass & Volume Week 3 September 14, 2015

What’s the Matter? What is matter? P6 Unit 1 Lesson 1 Introduction to Matter P6 What’s the Matter? What is matter? Matter is anything that has mass and takes up space. Matter makes up the materials around you. Everything is made up of matter. Light, sound, and energy are not matter because they do not have mass or takes up space.

What is mass? P7 Mass describes the amount of matter in an object. Unit 1 Lesson 1 Introduction to Matter P7 What is mass? Mass describes the amount of matter in an object. A gram (g) is a common measurement of mass. Objects of the same size can be made up of different amounts of matter. Weight is a measure of the gravitational force on an object. The greater the mass of an object, the greater the gravitational force on the object and the greater the weight will be.

How does mass differ from weight? Unit 1 Lesson 1 Introduction to Matter P7 How does mass differ from weight? You would weigh less on the moon because gravity on the moon 1/6 as strong as it is on Earth. Mass stays the same for an object even when increased or decreased gravitational forces change the weight of the object. 7) Weight is the downward pull of an object due to gravity. Because gravity on the moon is less than Earth, an astronaut weighs less on the moon. MASS STAYS THE SAME

Measuring Mass – Triple-Beam Balance 1st – Place the object on the scale. 2nd – Slide the large weight (100g) to the right until the arm drops below the line. Move the rider back one groove. Make sure it “clicks” into place. 3rd – Repeat this process with the top weight (10g). When the arm moves below the line, back it up one groove. 4th – Slide the small weight (1g) on the front beam until the lines match up. 5th – Add the amounts on each beam to find the total mass to the nearest tenth of a gram.

40 mL 35 mL How can volume be determined? P12 Volume of rock = Unit 1 Lesson 1 Introduction to Matter P12 How can volume be determined? Liquid volume is measured with a beaker or graduated cylinder in liters (L) or milliliters (mL). 1 mL = 1 cm3 Displacement of water in a graduated cylinder can be used to find the volume of irregular-shaped solid objects. How many milliliters of fluid does this object displace? 35 mL 40 mL Volume of rock = 5 mL or 5 cm3

C 180 mL 60 cm3 What causes the meniscus? A concave meniscus occurs when the molecules of the liquid attract those of the container. The glass attracts the water on the sides.