# ENERGY TRANSFORMATIONS

## Presentation on theme: "ENERGY TRANSFORMATIONS"— Presentation transcript:

ENERGY TRANSFORMATIONS
Potential/Kinetic Heat Transfers Inclined Planes & Pulleys

A lamp that plugs into a wall socket draws energy which flows through a thin wire in the bulb causing it to glow. What energy transformations are taking place? Electrical  Light  Thermal

Mimi was eating dinner at Pappasitos when she decided that she was going to help the waiter and pass out some dinner plates. She burned her hand on the first plate. How was the heat transferred from the plate to her hands? Conduction

Look at the rollercoaster pictured below
Look at the rollercoaster pictured below. Where on the coaster do we have the most potential energy? Point A

Arrange the points in the picture below from most kinetic to least kinetic:
D, E, C, F, B, G, A

Mechanical  Electrical  Light
The picture shows a light bulb attached to a hand generator. What energy transformation occurs as the handle of the generator is turned? Mechanical  Electrical  Light

Chemical  Electrical  Light
The diagram shows a circuit with the bulb glowing. How does the energy change as it moves from inside the battery, along the wires, and through the light bulb? Chemical  Electrical  Light

What are the 5 signs of a chemical change?
New substance formed Gas given off Color change Temperature change Fire

What is an advantage of using an inclined plane?
It reduces the amount of force used

Chemical  Electrical  Sound
What energy transformations take place when a battery-operated radio is in use? Chemical  Electrical  Sound

People get energy from the food that they eat and transform that energy as they move. Which energy transformations occur as a student eats and then rapidly rubs the palms of their hands together? Chemical  Mechanical  Thermal

The pulley pictured below is a _____________ pulley
The pulley pictured below is a _____________ pulley. When using this pulley the amount of force ____________ and the direction the load moves ___________. moveable decreases stays the same

When using a simple machine, the amount of work always ___________.
Stays the same

What is the difference between an element and a compound?
An element is a pure substance; a compound is 2 or more elements chemically combined

Label the following as elements or compounds: NaCl: He: N2SO4: H: cl: OH:
Neither Compound

Made up of 2 elements that are chemically combined
Carbon is considered an element, while carbon dioxide is considered a compound. This is because carbon dioxide is – Made up of 2 elements that are chemically combined

Can fell asleep on his towel at the beach
Can fell asleep on his towel at the beach. While he was sleeping, he forgot to turn over so he got an AWESOME tan on one half of his body. How was the heat transferred to Can? Radiation

What is a disadvantage of using an inclined plane?
The distance the load travels increases

What are 3 characteristics of metals?
Good conductor of electricity Malleable/Ductile High Luster (shiny)

Why does warm air rise and cool air sink?
DENSITY! (Warm air is less dense than cool air)

What are 3 characteristics of nonmetals?
Poor conductor of electricity Brittle Dull luster

The pulley pictured below is a _____________ pulley
The pulley pictured below is a _____________ pulley. When using this pulley the amount of force ____________ and the direction the load moves ___________. fixed stays the same changes

Semi-conductors of electricity
What are metalloids? Semi-conductors of electricity Has properties of both metals & nonmetals

A) Non-Metals B) Metalloids C) Metals
The table shows the properties of three classifications of elements. What are the best headings for columns A, B, and C? A) Non-Metals B) Metalloids C) Metals

The table shows the physical properties of four elements
The table shows the physical properties of four elements. Which element is classified as a metalloid? Polonium

When using simple machines, weight/mass of the load always __________________.
Stays the same

Wyatt decided that he wanted to buy a lot of churros for Science class
Wyatt decided that he wanted to buy a lot of churros for Science class. He kept them heated by leaving them under these lamps. How is the heat being transferred from the lamps to the churros? Radiation

Increase the height of the cliff
How would I increase the amount of potential energy that Wiley Coyote has in this picture? Increase the height of the cliff