Sources of Energy Review

$200

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$200$400$600$800$1000

Final DOUBLE Jeopardy

Tinted windows can be added to many cars? The tinted windows help to keep the inside of the car cooler on sunny days in the summer because some of the sunlight-

a.Gets trapped in the window glass

b.Is absorbed in the window glass

c.Is reflected from the window glass

d.Passes through the window glass

C.

D.

A drummer strikes a brass cymbal with a drumstick. The cymbal makes a long crashing sound. As soon as the drummer pinches the cymbal with his fingers, the sound stops. Why does the sound stop?

a.The vibrating cymbal is warmed by the fingersb.Electrical energy in the drummer’s fingers stops the sound.c.Air around the cymbal is shut off. d.Vibrations of the cymbal are stopped.

What are the parts of an electromagnet?

a. Battery, nail, bulb, copper wire

b. Battery, nail, copper wire

c. Battery, bulb, switch, copper wire

d. Battery , copper wire, nail, magnet

B.

Juan is building a circuit board that will show how electrical energy can be transformed into light energy. Which materials does Juan need to build the circuit that will demonstrate this transformation of energy?

a.Switch, string, battery, bulb

b.Battery, bulb, switch, copper wire

c.Copper wire, battery, bulb, magnet

d.Switch, bulb, copper wire, tape

B.

A.

Students are creating an electromagnet and notice that the battery feels warmer the longer they use it. What should they do?

a.Stop and put on gloves

b.Ignore it and keep working

c.Wet their fingers to keep them cool

d.Ask someone else to hold the battery

DAILY DAILY DOUBLEDOUBLE

Look at the objects below, all of them help people observe the world by-

a.Reflecting light

b.Refracting light

c.Storing light

d.Blocking light B.

The picture below illustrates how solar panels can store the sun’s energy. Which of the following conclusions can be made from the illustration about the capture of the sun’s energy in these panels?

a.The panels should face the sun for best use.

b.The panels should be like windows letting the sun in the house for better light.

c.The sun’s energy is the cheapest to use to heat your house

d.The solar panels last a long time.

A.

D.

Today scientist know that vibrations create sound and that light travels in waves. Which of the following statements is true about how scientists validate theories?

a.Scientists validate theories by discussing their weaknesses.b.Scientists validate theories by publishing a bookc.Scientists validate theories by purchasing materials.d.Scientists validate theories by repeated investigations.

Electricity flows easiest through-

a. wood c. plastic

b. metal d. cotton

B.

Which question could be answered from these data?

a. Does a light bulb charge a battery?

b. Will a glowing light bulb get hot?

c. Is a battery required to have light?

d. Which materials conduct electricity?

D.

Materials in container

Light bulb Off

Light bulb On

Wood chips X

saltwater X

Aluminum foil

X

Sand X

On your white board, draw a diagram that shows how the circuit should be connected.

Students are working together creating a closed circuit. The teacher checks their circuit and says the parts are connected correctly. The light bulb, however, will not turn on. List three ways the students should try to fix the circuit. Write you answer on your white board.

A.

A clear glass beaker is filled half full of water. A pencil is placed in the beaker and one end rests against the top edge of the beaker. When viewed from the side, the pencil appears to be broken. The bottom of the pencil does not line up with the top. There appears to be a break at the place where the water and air meet. What causes this to happen?

a.Light changes direction in the waterb.Light breaks the pencilc.Light is absorbed by the pencild.Light is reflected by the air

On your white board, list two ways that solar energy and heat energy are different. Write you answers on a t-chart like we did in class

Energy made available by the flow of electrons through a conductor is called-

a.Electric circuit

b.System

c.Electrical energy

d.Current

C.

The movement or flow of electricity in a certain path is called-

a.System

b.Electromagnet

c.Closed Circuit

d.Current

D.

This object is made with a battery, two insulated wires, a socket, and a light bulb-

a. Electromagnet

b. Conductivity

c. Closed Circuit

d. Open Circuit

C.

A temporary magnet made by winding wire around a nail; when current flows in the wire the iron becomes a magnet-

a.Electricity

b.Electromagnet

c.Open Circuit

d.Electric Circuit

B.

A group of parts combined to form a whole that works or moves as a unit-

a.System

b.Electromagnet

c.Electrons

d.CurrentA.

A circuit in which no current flows-

a.An closed/complete circuit

b.An open/incomplete circuit

c.Current

d.System

B.

a. Convex lens

b. Concave lens

c. Magnifying lens

d. Hand lens

A lens that is thicker in the center and thinner at the edges, a shape that bends light inward?

A.

B.

A lens that is thinner in the center and thicker at the edges, a shape that bends light outward-

a.Convex lensb.Concave lensc.Hand lensd.Magnifying lens.

DAILY DAILY DOUBLEDOUBLE

The bouncing back of light waves off of a surface is-

a.Observing

b.Refraction

c.Reflection

d.Light

C.

D.

A substance that does not allow electricity to pass through easily is called a-

a. Conductorb. Electricityc. Heat d. Insulator

What do these 2 symbols mean?

a.Wear gloves, wear goggles

b.Wear gloves, flammable

c.Wear gloves, electrical shock

C.

FINAL JEOPARDY

What do these two symbols mean?

Science Symbols

Wear goggles and flammable

(catches fire easily)