Cornell Notes 2-2-2-1 How Heavy? Page 53 November 7, 2017

Review force and gravity What is the difference between mass and weight? Will the mass stay the same everywhere that the object goes? Will the weight stay the same everywhere that the object goes? Gravity and Kinetic Energy Course, 2.2: How Heavy? Step 1

Review force and gravity Weight is a measurement of the force of gravity pulling an object toward Earth. Is gravity the same everywhere? Gravity and Kinetic Energy Course, 2.2: How Heavy? Step 1

Gravity and Kinetic Energy Course, 2.2: How Heavy? Focus question What is gravity like on other planets compared to Earth? Gravity and Kinetic Energy Course, 2.2: How Heavy? Step 2

Gravity and Kinetic Energy Course, 2.2: How Heavy? Gravity scenarios Notebook sheet 8, Response Sheet— Investigation 2 Discuss the two scenarios in your group and record your responses. Gravity and Kinetic Energy Course, 2.2: How Heavy? Step 3

Discuss first scenario Gravity and Kinetic Energy Course, 2.2: How Heavy? Step 4

Discuss second scenario Gravity and Kinetic Energy Course, 2.2: How Heavy? Step 5

Discuss second scenario Gravity is one of the basic forces of the universe. The force of gravity pulls objects together. You and everything around you is being pulled toward Earth because it is so massive. Let’s think about how the force of gravity on Earth compares with other planets. Gravity and Kinetic Energy Course, 2.2: How Heavy? Step 5

Discuss second scenario What questions do you still have about gravity? Gravity and Kinetic Energy Course, 2.2: How Heavy? Step 5

Gravity and Kinetic Energy Course, 2.2: How Heavy? Discuss Moon gravity Is there gravity on the Moon? How do you know? Is the force of gravity on the Moon the same as the force of gravity here on Earth? Why isn’t the force of gravity on the Moon the same? Gravity and Kinetic Energy Course, 2.2: How Heavy? Step 6

Gravity and Kinetic Energy Course, 2.2: How Heavy? Overview the data Notebook sheet 9, Weight in Various Locations Gravity and Kinetic Energy Course, 2.2: How Heavy? Step 7

Gravity and Kinetic Energy Course, 2.2: How Heavy? Overview the data Celestial body: the object being studied Image and diameter: comparative size of objects Object mass: mass of object as compared to Earth Person mass: mass of person measured in kilograms Gravity and Kinetic Energy Course, 2.2: How Heavy? Step 7

Gravity and Kinetic Energy Course, 2.2: How Heavy? Overview the data Person weight: the weight of the person on each object Gravitational force: 1 represents acceleration of gravity on Earth (9.8m/s2); less than 1 represents a smaller acceleration of gravity. Gravity and Kinetic Energy Course, 2.2: How Heavy? Step 7

Gravity and Kinetic Energy Course, 2.2: How Heavy? Overview the data For example, on Earth the acceleration of gravity is 1 g, that is 1 ✕ 9.8 m/s2. On Mars, it is 0.38 g, that is 0.38 ✕ 9.8 m/s2. Gravity and Kinetic Energy Course, 2.2: How Heavy? Step 7