WorksheetsReview for 3rd CBA
Total questions: 70
Worksheet time: 1hrs 10mins
What is a circuit with several paths for electricity to flow?
conductor
series circuit
parallel circuit
open circuit
When a circuit is closed, the load is _____________?
On
Off
What kind of circuit is this?
Series
Consecutive
Parallel
Training
Wood is a(n) _____?
conductor
insulator
Electric current ____________, or travels smoothly in a closed circuit.
sends
insulates
conducts
flows
Mr. Reincke attached the parts as shown here and the bulb did not light. The most likely reason the bulb does not light is because-
batteries can’t provide electric energy
the switch must be open for electricity to flow
the switch must be open for electricity to flow
yarn does not conduct electricity
A student builds a circuit made up of a battery, two light bulbs, and a switch. What will the student most likely observe in this circuit?
Light bulb 1 and light bulb 2 will both be on
Light bulb 1 will be off, but light bulb 2 will be on
Light bulb 1 and light bulb 2 will both be off
Light bulb 1 will be on, but light bulb 2 will be off
Students constructed a circuit using different-colored lightbulbs. What will happen if Switch 3 is closed and the other switches are 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
Why do electricians wear gloves made of rubber?
It is soft.
It is waterproof.
It is an insulator.
It is inexpensive.
If we touch a a live wire carrying current, we get a shock. This is because our body is a/an
conductor of electricity
insulator of electricity
source of electricity
None of these
Why is a switch used in a circuit?
To complete or break a circuit
To save energy
To prevent electric shocks
To make the bulb glow easily
Which object does NOT conduct electricity?
copper wire
iron nail
salt water
wood
Sara wants to make an electric circuit. She gathers the items shown here.
What other item does Sara need to make a complete circuit.
a battery
a switch
an insulator
a conductor
Look at the four ways that you could connect a battery, a paper clip, a light bulb, and some wire.
Which one of these would light the bulb?
Bulb glows only in
closed circuit
open circuit
open circuit if bulb is not fused
in both circuits
Which of these is the best conductor of electricity?
glass bowl
copper wire
plastic pipe
string
A group of students built the circuit shown above. The light bulb does not glow. Which statement explains this observation?
The battery has no power left.
The light bulb is not part of a complete circuit.
The switch is broken.
The bulb is burnt out.
The picture below shows one way electrical energy is produced. What type of energy is used to create the electrical energy?
Light Energy
Sound Energy
Thermal Energy
Mechanical Energy
Rube Goldberg was an artist who drew cartoons that showed a very complicated way to do a simple task. The picture shows a cartoon like the ones Goldberg drew. Which form of energy is used to turn on the switch? (5.6A)
Light energy
Thermal energy
Electrical energy
Mechanical energy
Which of these devices is the only one NOT designed to produce both sound and light energy? (5.6A)
Observe the image shown below. How is the energy from the solar panel allowing the traffic light to function?
Light energy is absorbed by the solar panel. It is converted to electrical energy and is allowing the light to function
Thermal energy is absorbed by the solar panel and converted to light energy
Light energy is absorbed by the solar panel and converted to mechanical energy.
Thermal energy is absorbed by the solar panel and converted to mechanical energy
Which statement best describes how playing a violin converts one form of energy to another.
Mechanical energy is converted into vibrations from the strings
Mechanical energy is converted into thermal energy
Electrical energy is converted into mechanical energy
Electrical energy is converted into thermal energy
A student plugged in his headphones into his iPhone. The headphones need to be recharged after six hours. Which form of energy allows the headphones to produce music?
Thermal energy charges the headphones and converts to sound energy
Electrical energy charges the headphones and converts to mechanical energy
Mechanical energy charges the headphones and converts to sound energy
Sound energy is converted after the headphones were charged by electrical energy.
A student placed a beaker on top of a hotplate. The arrow placed on the beaker demonstrates the movement of the liquid caused by the energy produced by the beaker. How does the energy produced by the beaker affect the movement of the substance.
The decreased energy produced from the hotplate is causing the substance to move rapidly
The increased energy produced from the beaker is causing the substance to move less rapidly.
The increased energy produced from the hotplate is causing the substance to move rapidly
The increased energy produced from the hotplate is circulating throughout the beaker causing the substance to heat up throughout
A student rubs a metal coin against a rock and noticed the coin was warmer. Which best explains how the energy was transferred.
Mechanical energy to Thermal energy
Light energy to Thermal energy
Thermal energy to Mechanical energy
Electrical energy to Thermal energy
This is an wind up toy. The wind up toy has a metal clip on its back that can be wound up. As the clip unwinds, it moves the legs and arms, causing the toy to move forward. How does this demonstrate transfer of energy?
The winding of the clip is mechanical energy and as it is moving the toy, it causes additional mechanical energy.
The winding of the clip is mechanical energy and the movement of the toy caues thermal energy
The movement of the root is mechanical energy and the winding of the toy uses electrical energy
As the clip moves it causes mechanical energy and the legs and arms move because of sound energy from the clip
People use thermal energy everyday. All of the following are examples of how thermal energy is used except---
Warm air from a hair dryer causes water to evaporate from wet hair.
Popcorn seeds are placed in a popcorn maker until they pop out of their hard shells.
Pancake batter is placed in a skillet on a stove to make pancakes.
An electric guitar is connected to an amplifier to make the guitar louder.
Which forms of energy does a camp fire produce?
Light energy and electrical energy.
Light energy and mechanical energy.
Thermal energy and mechanical energy.
Thermal energy and light energy.
In which circuit below is Bulb A on, but Bulb B is off?
A
B
C
D
The blades of tall windmills can be seen turning on some high ridges in west Texas. The giant blades turn generators that convert -
wind energy into solar energy
electrical energy into wind energy
solar energy into wind energy
wind energy into electrical energy
Alex plucks a string on her guitar. This causes the string to vibrate. Alex is using the vibrating string to produce--
electricity
light
sound
heat
a fan transforms ___________________ energy into ________________________ energy
mechanical energy, thermal energy
thermal energy, sound energy
electrical energy, mechanical energy
light energy, heat energy
A toaster is powered by electrical energy. The toaster changes the electrical energy to.....
wind energy
solar energy
thermal energy
mechanical energy
A source of power would be a....
battery
open circuit
closed circuit
a wire
In science, what is the definition of energy?
Movement of things
Ability to do work
Use of electricity
Cycle of work
Which of the following best models how light is reflected?
An arrow hitting a target.
bouncingA ball bouncing off a wall.
An apple falling from a tree.
A marble rolling down a ramp.
If a student has two magnets, how might it be determined which magnet is stronger?
Count how many paper clips each magnet can lift.
Submerge each magnet in a bowl of water.
Examine each magnet to determine the north pole.
Measure the length and the mass of both magnets.
A hand lens makes objects appear larger because the lens
increases the light's strength.
bends light passing through it.
changes the color of the light.
converts light energy to heat.
Which description best shows light being reflected?
a mouse looking in the mirror
looking through a window
looking at a table
looking at a snow globe
Light travels in a straight line through air. objects viewed through water is different because it travels through water
bounced.
reflected.
bent.
absorbed.
2 tools below would be useful in testing how the mass of an object can affect the distance it moves after being pushed
Spring scale and hot plate
Balance and meter stick
Graduated cylinder and beaker
Magnet and thermometer
What form of energy does a lamp use to produce light?
Mechanical
Thermal
Sound
Electrical
All of the following devices produce light energy EXCEPT –
laser pointers.
fluorescent lamps.
air conditioners.
computer monitors.
After winding, the toy frog flips over. This toy demonstrates what kind of energy?
Light
Electrical
Thermal
Mechanical
A toy carousel begins to turn when the candle is lit. Which of these describes the energy that makes the carousel turn
Heat from the candle produces currents of warm air.
Heat from the candle produces electrical energy.
Light from the candle produces mechanical energy.
Light from the candle produces wind currents.
A lamp produces light. When the lamp produces light, it demonstrates that the lamp must have a –
powerful magnet
rechargeable battery
closed circuit
plastic cord
Sugar in hot water dissolves more quickly. Students were investigating the effects of what form of energy
Thermal
Electrical
Sound
Mechanical
Aluminum screens can be placed on the windshield of a parked car. This screen helps to keep the car cool because it
reflects the sunlight
causes evaporation
absorbs heat
conducts electricity
Light can be refracted & separated into different colors indifferent medium
Light travels in a straight line & can be reflected off the surface ofwater
Light is refracted as it moves from one medium to another medium.
Light is absorbed by water and reflected off glass.
Conduct 5 trials, using a different scale to pull each block of wood
Conduct 5 trials, using a different table for each trial
Conduct 5 trials, pulling a different side of each block each time
Conduct 5 trials pulling each block of wood in the same way for each trial
travels in straight lines and reflects from the surface of the mirror
enters the mirror and changes direction when refracted by the mirrors back
refracts in the glass of the mirror and is spread out all over the room
travels through air and does not change its direction in air
Open the switch & connect the two wires that are attached to the wood block
Swap positions of the two wires connected to the battery & open the switch
Move the switch closer in the circuit to the battery
Connect the two wires that are attached to the wood block
S-1 pulls the cart to the left & Student 2 pulls the cart to the right
S-1 pulls the cart to the left & Student 2 pushes the cart to the left
S-1 pushes the cart to the right & Student 2 pushes the cart downward
S-1 pushes the cart to the right & Student 2 pulls the cart upward
Light and its reflections travel in straight lines.
Light cannot reflect from more than one surface.
Light that goes through water cannot travel in straight lines.
Light that goes through water cannot travel in straight lines.
How many spaghetti noodles will it take to hold up the mass of a penny?
How long should the string be in order to support the most mass of pennies?
How does distance in the chairs affect the force needed to break the noodle?
How much force will it take to break the spaghetti noodle?
Thermal
Electrical
Mechanical
Sound
a complete circuit
a light ray
an incomplete path
a sound wave
0
1
2
3
Doing work by pushing the ball and changing its motion and position
Work by pulling the racquet & changing the ball position but not its motion
Changing the position but not the motion of the ball
Changing the position and motion of the ball without doing any work
Smooth surfaces _______ a lot of light.
reflect
bend
absorb
twist
The flower’s stem appears larger under water because the water —
absorbs light
produces light
repels light
refracts light
Students use a set of headphones to listen to music. Which object uses the same source of energy as the headphones?
A flute using wind energy
A teapot using thermal energy
A piano using mechanical energy
A keyboard using electrical energy
