WorksheetsUnit 2
Total questions: 48
Worksheet time: 37mins
A student uses a set of headphones to listen to music. Which of these objects uses the same source of energy as the headphone?
A flute using wind energy
A piano using mechanical energy
A keyboard using electrical energy
A teapot using thermal energy
A simplified diagram of a system using solar energy is shown. To recharge the battery for later use without lighting the bulb, which of the following switches should be closed?
Switch S only
Switches R & S only
Switches R & T only
Switches R, S, & T
Which of these is NOT an example of the bicycle using mechanical energy?
The pedals, gear, and chain help turn the wheels
The wheels turn when the bike moves
The front wheel guides the bike as it moves
The reflector allows the bike to be seen at night
What types of energy are most represented in a lit lightbulb that is plugged into an outlet?
light, thermal, electrical
mechanical, sound, light
chemical, light, thermal
electrical, chemical, sound
In order to create a closed circuit, electricity must flow through a path, usually made of wire. What property must the wire have to function properly in the complete circuit? The wire must-
be a conductor
block thermal energy, so it doesn't get hot
be flexible, so it can be bent into curved shapes
be an insulator
The diagram shows a series circuit with 3 lit bulbs. How many of the bulbs will remain lit if the wire is cut at the point shown by the arrow?
0
1
2
3
A teacher takes the top and a side off a box. She cuts a hole in another side & puts a candle outside the box. When the teacher lights the candle in a dark room, some of the candlelight shines through the hole. Which diagram best shows how the light appears on the opposite wall of the box
The battery can be connected to a bell and a switch to produce sound. Which statement best explains why there are two metal posts on the battery?
The battery only needs one metal post to connect to the bell, but the other metal post is present in case the first
The battery needs to form a complete circuit that starts with one metal post and ends with the other metal post
One metal post makes a complete circuit with the switch, and the other metal post makes a complete circuit with the bell
One metal post makes the bell start to ring, and the other metal post makes the bell ring louder
Which of the following is NOT a reason for the appearance of the girl's eye through the lab instrument?
Magnification by the instrument
Refraction through the instrument
Light moving in straight lines
Reflection off the instrument
What is a circuit with several paths for electricity to flow?
open circuit
series circuit
parallel circuit
closed circuit
What is a circuit that only has ONE path for electricity to flow?
electric circuit
series circuit
parallel circuit
Open circuit
What form of energy does the sun give?
light and thermal
mechanical and light
chemical and thermal
thermal and mechanical
The lightbulb in the circuit does not light up. Which statement explains this observation?
the circuit does not have a switch
the battery is not charged
the bell uses most of the energy from the battery
the lightbulb is not part of a complete circuit
Water flows through turbines in dams like the one shown below. The flowing water makes the turbines spin. What type of energy is used to make the turbines spin in this type of dam?
Light energy
Thermal energy
Chemical energy
Mechanical energy
A student looks into a fish pond and points to a goldfish. His friend looks where he is pointing & tells him that the fish is actually in a different location. Which property of light explains why his friend is correct?
the light rays that travel through water & then into air are refracted
the light rays that travel through water & then into air are enlarged
the light rays that travel through air & then into water are reflected
the light rays that travel through air & then into water are reduced
This picture shows a child standing in a swimming pool. Why does the lower part of the child appear to be so much different in size than the upper part?
The light rays that travel through water and then into air are refracted
The light rays that travel through water and then into air are enlarged
The light rays that travel through air and then into water are reflected
The light rays that travel through air and then into water are reduced
Which objects requires only mechanical energy to perform its main function?
Hammer
Fan
Thermometer
Iron
Electricity can produce other forms of energy. Which of these energy changes occurs when using a toaster?
heat energy changing to electrical energy
Light energy changing to heat energy
electrical energy changing to heat energy
electrical energy changing to light energy
Which of the bells will ring in this circuit?
Bell 1 only
Bell 1 & 4 only
Bell 3 & 4 only
Bells 1, 2, 3, & 4
Which activities on this list are examples of the use of mechanical energy?
Activities 1, 4, and 6
Activities 2, 4, and 5
Activities 1 and 2
Activities 3, 5, and 6
What type of energy causes water to evaporate
thermal energy
light energy
sound energy
mechanical energy
Lasers produce a beam of light that can focused on a small area. A teacher uses two mirrors to shine a beam of light from a laser onto a box. Which diagram shows how the teacher should position the two mirrors?
Which statement about light is supported by this picture?
light travels in straight lines until it enters a different material like water in a like
light can refract in air and in clear water
light is reflected off the smooth surface of the lake
the water in the lake is blue because light forms on an image
What kinds of energy are needed in this investigation to change the state of matter of the candle?
light, mechanical, and thermal
electrical and thermal
mechanical, light, and electrical
thermal and mechanical
Which picture shows a circuit that will light the light bulbs?
Which of these changes to the electric circuit shown will vause the lightbulb to light up?
straightening the wire so that the current can flow more easily
adding a switch & more wire so that the current can flow more easily
turning one battery so its positive end connects to the other battery's negative end
making the length of wire the same on both sides of the lightbulb
After winding the toy, the toy frog flips over. What type of energy is used to make the frog work?
thermal
light
mechanical
electrical
A student spilled a drop of water on her textbook. When she looked through the water droplet, the student noticed that the writing in the book looked much bigger. This happened because light was-
reflected off the water
refracted by the water
absorbed by the water
bounced off the water
What would happen if switch 3 was closed and the other switches were left open?
only the white bulb will operate
none of the bulbs will operate
only the white and yellow bulbs will operate
only the red and blue bulbs will operate
Which change would cause all the bulbs to go out?
removing wire 1
Removing wire 2 & 4
Removing wire 2 & 5
Removing wire 3 & 4
A student builds the circuit shown in the picture. What will the student most likely observe in this circuit?
Lightbulb 1 & Lightbulb 2 will both be on
Lightbulb 1 will be off, but Lightbulb 2 will be on
Lightbulb 1 will be on, but Lightbulb 2 will be off
Lightbulb 1 & Lightbulb 2 will both be off
Which property of light makes it possible to produce shadows?
Light can be refracted
Light is a form of energy
Light can be separated into different colors
Light travels in straight lines
An image is reflected in a mirror because-
Light rays bend when they hit the mirrors surface
Light waves move more slowly in air
The light strikes the mirror, bounces off, & travels straight back to you
Light passes through the mirror and then is absorbed
Which procedure will result in only the blue lightbulbs operating?
Close switches 1 & 2 and leave switch 3 open
Close switch 3 and leave switches 1 & 2 open
Close switches 2 & 3 and leave switch 1 open
Close switch 2 and leave switches 1 & 3 open
When light travels through air into a prism, it bends and separates into many colors. In which other situation does light bend?
when light passes through outer space
when light hits a wall
when light moves through air into water
when light hits a mirror
A students looks into a mirror and sees an image of an object. Which diagram shows an X where the object is most likely located?
The pictures shows what a student observed when he looked through a hand lens at a penny.
What happens to light passing through a hand lens that makes the image of the penny appear larger? The light is-
reflected
refracted
absorbed
Which type of object blocks all light from going through?
Translucent
Opaque
Transparent
Which type of object scatters light as it passes through an only allows part of the light to shine through?
Opaque
Translucent
Transparent
Light shines clear through objects that are
Translucent
opaque
Transparent
A student placed a straw in a cup of water. The straw appears to be bent because light-
bends when it passes through water (refraction)
reflects the straw on the water's surface
Light waves bending through a prism is an example of:
Reflection
Refraction
Absorption
A black shirt capturing light waves and making a person feel hot in the summer is an example of:
Reflection
Refraction
Absorption
The picture shows how a light ray behaves with two different types of materials. Which table best describes the behavior of the light ray as it encounters the materials?
Material 1: The light ray is scattered in all directions
Material 2: The light ray is refracted
Material 1: The light ray is absorbed
Material 2: The light ray is reflected
Material 1: The light ray is transmitted
Material 2: The light ray is refracted
Material 1: The light ray is refracted
Material 2: The light ray is reflected
A student wants to build a circuit with four lightbulbs and one bell. The student wants to place a switch in the circuit so that only one light will still be on and the bell will still ring when the switch is opened. Which of these circuits should the student build?A student wants to build a circuit with 4 lightbulbs
Eight activities that use energy are listed in the box. Each of these activities requires the use of which kind of energy?
Thermal
Mechanical
Electrical
Sound
