Science Focus Lesson SC.5.P.10.2 Energy Causes Change Polk County Public Schools.

Elementary Science

Science Focus LessonSC.5.P.10.2Energy Causes Change

Polk County Public Schools

SC.5.P.10.2Benchmark: Investigate and explain

that energy has the ability to cause motion or create change.

Essential Question:How does energy cause motion or

create change?

Vocabulary:

Energy

ENERGYEnergy is the ability to do work.

In Science, work is done when a force moves an object. Energy can cause motion. Energy can also cause changes in matter.

Energy is a property of matter, and all matter has it. Whenever a light bulb is lit, a turkey is roasted, an orchestra plays, a fan spins, a book falls off the shelf, or a fire burns, you can be sure that energy made it happen.

ENERGYEnergy can cause changes in matter.

People use electrical energy to start car engines, run the headlights and taillights, and light buildings and streets.

Heat energy deep below the Earth’s surface makes a volcano erupt. The eruption can throw lava, rocks, and ash high into the air.

Plants use the energy in sunlight to change carbon dioxide gas and water into a simple sugar for food.

Look at the pictures below. With your shoulder partner, explain how energy in each picture causes motion or creates change. Write a sentence for each if time allows.

Summarize

Moving air, or wind, contains energy. In the past, this energy has turned windmills used to pump water or grind grain. Today, windmills or wind

turbines are used to generate electricity.

WIND IS A SOURCE OF ENERGY

WIND IS A SOURCE OF ENERGY

Windmills change the energy of moving air into electrical energy. Wind turns the windmill’s blades. The blades turn a rod that is connected to a generator that produces electricity. But using windmills to generate electricity only works well in places where wind blows steadily.

WATER IS A SOURCE OF ENERGY

Moving water has energy. Hydroelectric power plants use turbines and generators to convert the energy or moving water into electricity. Most hydroelectric power plants are part of dams built across rivers.

WATER IS A SOURCE OF ENERGY

In some coastal areas, the moving water in ocean tides is used to generate electricity. A dam is built over a narrow bay. Rising and falling tides power turbines and generators, just like in a river dam. The water in rivers and along ocean coasts is always moving.

SummaryWith your shoulder partner, discuss how air and

water are sources of energy. If time allows, make a list of energy in these pictures that causes motion or creates change.

Guided PracticeWork with your shoulder partner to answer each question

1. Frank uses a bowling ball to demonstrate how energy can cause changes. Which of the following actions would NOT demonstrate a change caused by applying energy to the ball?

A. He holds the bowling ball in both hands. B. He spins the bowling ball with one hand. C. He rolls the bowling ball across the floor. D. He lifts the bowling ball to place it on a

shelf.

“A” is the correct answer!

He holds the bowling ball in both hands.

2. Hydroelectric power creates electricity by using moving __________.

A. Heat B. Air C. Water D. Light

Guided Practice

“C” is the correct answer!

Water

3. How does the Sun’s energy create change in plants?

A. It allows the plant to breathe.B. It changes carbon dioxide and water into

food.C. It changes the position of the plant.D. It gives water to the plant.

Guided Practice

“B” is the correct answer!

It changes carbon dioxide and water into food.

SummaryWith your shoulder partner, describe energy changes that can be found around your school. Think about your classroom, the cafeteria, PE, Music, Art, and other areas of the school.

Check Your UnderstandingRecord your answers. Check them at the end.

1. Sara just got her drivers license and is driving to high school for the first time. Which of the following actions would demonstrate that energy causes change?

A. She is stopped waiting for some students to cross the street.

B. She pushes the gas when the light turns green.

C. She is parked in her assigned parking space. D. She is stopped at a red light.

2. Maria uses a basketball to demonstrate how energy can cause changes. Which of the following actions would NOT demonstrate a change caused by applying energy to the ball?

A. She shoots the basketball into the hoop. B. She dribbles the ball down the basketball

court. C. She holds the ball in her hands before the

game starts. D. She passes the ball to one of her teammates.

Check Your Understanding

3. Windmills or wind turbines use wind to create _________________.

A. Heat EnergyB. Light EnergyC. Sound EnergyD. Electrical Energy

Check Your Understanding

4. Jason’s family takes a trip to watch a horse race. Which of the following actions would NOT demonstrate a change caused by the horses on the track?

A. The horses shoot out of the gate when they hear the gun sound.

B. The horses run faster when the jockey yells. C. The horses are standing still at the gate waiting

for the race to start. D. The horse cross the finish line.

Check Your Understanding

Check Your Answers1. B2. C3. D4. C

SummaryWrite a summary paragraph explaining how energy can cause motion or create change.