Energy Classwork and Homework www.njctl.org Slide 3 / 29 - PDF document

Slide 1 / 29 Slide 2 / 29 Energy Classwork and Homework www.njctl.org Slide 3 / 29 Classwork #1: Energy

Slide 4 / 29 1 Energy is the ability and potential to do things. True False Slide 5 / 29 2 A running man has ___________ energy. Slide 6 / 29 3 A compressed spring has ___________ energy.

Slide 7 / 29 4 What are four different forms of energy? Slide 8 / 29 5 What has more energy, a ball on the ground, or a ball high up in the air? A Ball on the ground B Ball high up in the air Slide 9 / 29 6 When a ball is thrown up into the air, Kinetic Energy is not transferred into Potential Energy. True False

Slide 10 / 29 Homework: Energy Slide 11 / 29 7 Why do we eat and sleep? Slide 12 / 29 8 What do you think has more energy, a baseball thrown by you or a baseball thrown by a professional pitcher? Why? A Baseball thrown by you B Baseball thrown by a professional pitcher

Slide 13 / 29 9 Two blocks are pushed across the ground. Block A is moving noticeably faster than block B. Which one will go the farthest before stopping? Why? A Block A B Block B Slide 14 / 29 Classwork #2: Conservation of Energy and Energy Transfer Slide 15 / 29 10 Circle the correct terms: A Energy [ can/ cannot ] be created. B Energy [ can/ cannot ] be transferred.

Slide 16 / 29 11 Energy cannot be transferred through sound. True False Slide 17 / 29 12 Which quality of energy is always constant? A Kinetic B Potential C Total Mechanic Slide 18 / 29 Homework: Conservation of Energy and Energy Transfer

Slide 19 / 29 13 What is an example of a transfer of energy between kinetic and potential? Explain how you can tell that energy is being transferred. Slide 20 / 29 14 Energy is transferred during collisions. Write an example of a collision, and explain how you can tell that energy is being transferred. Slide 21 / 29 15 What is an example of energy transfer through heat?

Slide 22 / 29 16 Explain the transfer of energy in each part of this example: A You grab a bowling ball and roll it down the floor B The rolling bowling ball hits a second stationary bowling ball. C When the two bowling balls hit, you can hear a loud clanking sound Slide 23 / 29 Classwork #3: Energy and Force Slide 24 / 29 17 When you push or pull you are using a _________.

Slide 25 / 29 18 Fill in the blanks: A When objects are not touching each other, it is a/an __________ force. B When objects are touching each other, it is a/an __________ force. Slide 26 / 29 Homework: Energy and Force Slide 27 / 29 19 What are some examples of direct forces?

Slide 28 / 29 20 What are some examples of indirect forces? Slide 29 / 29 21 Now that we know the definition of force, explain why faster objects hit a wall harder or why the harder you pull on something, the faster it goes.