Incandescent

flashlight

A flashlight helps

you find your way

in the dark.

freezer

A freezer keeps

things icy.

funnel

A funnel is a

device that lets

you pour things

from one

container to

another.

gyroscope light bulb

A gyroscope is a spinning An incandescent

wheel set in a movable light bulb turns

frame. When the wheel electricity into light

spins, it is very hard to as an electric

move the gyroscope - it current causes a

essentially stays in its filament to glow in

original orientation. an air-free

enclosure.

- 36 -

engine

the track.

magnifying

Inventor

An inventor designs and

creates new, useful things.

iron

Irons press the

wrinkles out of

clothes.

joystick

A joystick is used

to play some

computer games.

glass

lock A magnifying glass

You can lock and unlock a is a lens that makes

lock with a key. things look larger

than they really

are.

microscope microwave oven

A microscope lets you see Microwave ovens heat up

mirror

You can see your

reflection in a

padlock pliers

You can lock and unlock a Pliers are tools that

very tiny things.

radar

Radar is a device that uses

reflected radio waves to

located objects at a

distance. Radar is short

for "radio detection and

ranging."

food quickly.

radio

A radio lets you hear

broadcast music and talk

shows.

mirror.

refrigerator

A refrigerator is a

machine that

keeps food cold.

padlock with a key.

remote control

A remote control lets you

operate a machine from

far away.

hold things.

rocket

A rocket is a

machine that

propels itself into

space.

sonar

In sonar (also called

echolocation), a high-

sewing

pitched sound (usually

safety pin

A safety pin is a type of

pin that is used to fasten

clothes and diapers.

scale

A scale is a machine for

weighing things.

clicks) is sent out. The

sound bounces off the

sews stitches very object and some returns. people who are far

The returning echo is

interpreted to determine

the object's shape,

direction, distance, and

texture. Dolphins (and

other toothed whales) and

some bats use sonar to

navigate and find prey.

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machine

telephone

A sewing machine

You can talk with

quickly and

away by using a

easily. The

telephone.

sewing machine

was invented in

1846 by Elias

Howe.

telescope

A telescope is a optical

device that makes

faraway objects appear

closer and larger,

allowing us to see distant

objects in space.

television

A television is a machine

that receives pictures and

sounds. People watch and

listen to shows on

television.

thermometer

A thermometer is

used for telling

what the

temperature is.

toaster

A toaster is a machine that

heats up slices of bread,

making toast.