Font size
WorksheetsReview- Circuits, Forces, Insulators & Conductors 4.6B, C, D
Total questions: 75
Worksheet time: 1hrs 21mins
This girl is wearing pink wool earmuffs to keep her ears warm in the snowy weather. Differentiate between conductors and insulators. How does the wool affect heat transfer? (wool is a type of fabric)
The wool is a conductor that transfers heat from her ears to the wool earmuffs.
The wool is an insulator that provides heat to keep the girl's ears warm.
The wool is a conductor that transfers heat from the girl's earmuffs to her ears.
The wool is an insulator that keep the girl's ears from loosing heat.
The following are conductors EXCEPT-
Which of these is a conductor?
An insulator does not allow electricity to pass through it easily. Which of the following would make a good insulator?
copper penny
iron nail
metal doorknob
rubber glove
Which of the following is the best conductor of electricity?
foam
copper
rubber
plastic
The electrical wires in many homes are made of copper and covered with plastic. Why are copper and plastic good choices for electrical wires?
Copper is a conductor of electricity, and plastic is an insulator of electricity.
Copper is an insulator of electricity, and plastic is a conductor of electricity.
Copper is a conductor of electricity, and plastic is an insulator of heat.
Copper is an insulator of electricity, and plastic is a conductor of heat.
Which group is correctly classifies the objects?
Group 1
Group 2
Group 3
Group 4
Which material would allow electricity to pass through?
Glass
Wood
Metal
Plastic
Why are most pan handles covered in rubber?
The metal pan is both a conductor and an insulator.
The rubber covering is a conductor and helps heat the metal pan.
The metal pan is too heavy and the rubber covering lightens the mass.
The rubber covering is an insulator and keeps the handle from becoming too hot.
a power source
battery
circuit
wire
path
a path along which an electrical current flows
battery
circuit
wire
path
a thin, flexible conductor of electricity
battery
circuit
wire
path
controls the flow of electricity
closed circuit
open circuit
switch
electrical current
a broken circuit
closed circuit
open circuit
switch
electrical current
a working circuit
closed circuit
open circuit
switch
electrical current
which one shows an open circuit
a
b
c - this one is too fuzzy to see - don't choose this one.
d
What changes electrical energy to light energy?
switch
light bulb
battery
conductor
What appliance converts (changes) ELECTRICAL energy to HEAT energy?
gas clothes dryer
calculator
hair dryer
cell phone
A phone charger has plastic around the metal wire inside. Why is there plastic surrounding the wire?
metal wire is an insulator
plastic is an insulator
plastic is a conductor
What is the output device in this diagram?
switch
battery
wire
light bulb
When the switch is closed the buzzer will sound because -
This switch is
closed
open
a sandwich
for sale at Walmart
Why does this nail attract the paper clip?
Electricity runs through the wire and creates a magnetic field.
because the battery
because it does
because the wire
____________ flows through the wire creating a magnetic field.
Electricity
magic
fairies
glitter
Which type of is represented in the picture?
a pulling force
an electrical force
a pushing force
a magnetic force
When you pick things up, you're _______.
pushing
pulling
Which of the following actions requires a push?
Playing tug-of-war
Picking a carrot
Opening a dresser drawer
Pedaling a bicycle
Materials with ____ surfaces have less friction. This means that they travel faster.
smooth
rough
both
Rougher surfaces have ___ friction. This means that they are more likely to slow down or stop.
greater
less
no
Will a toy car slow down quicker on carpet or foil?
Carpet because it is a rough surface and has more friction.
Carpet because it is a rough surface and has less friction.
Foil because it is a smooth surface and has more friction.
Foil because it is a smooth surface and has less friction.
A pencil falls to the ground when it is dropped. Which force acts upon the pencil, causing it to fall?
Friction
Motion
Magnetism
Gravity
Which of the following investigations tests the effect of gravity on an object?
Pulling a wagon through a grassy field
Rubbing two balloons together
Dropping a ball from different heights
Attracting iron filings with a magnet
Why is magnetism a force? Hint: Pick the 4 choices that are correct.
It can push objects away
It can pull objects close
It can cause objects to move
It can cause objects to change direction
They are strong
Students play with two small, toy plastic dogs with a strip attached to the bottom of them. When placed close together, the dogs will either move quickly towards each other and stick together or will push away from each other. These toys move because of the force of —
gravity
friction
magnetism
all of the above
What force enables the numbers and symbols to attach to the board?
Gravity
Friction
Magnetism
Air Pressure
Students conduct an investigation by rolling a car down a ramp covered with four different surfaces, while measuring the time it takes for the car to travel from the top of the ramp to the bottom of the ramp. The results are shown in the graph.
Which surface causes the LEAST amount of friction?
Surface W
Surface X
Surface Y
Surface Z
Students rolled a baseball down a ramp and measured the distance it traveled on three different surfaces.
What question could they be trying to answer?
Why do baseballs stop after rolling down a ramp?
How does friction change how far a baseball rolls?
How does a baseball stop rolling on a flat surface?
Which kind of ball rolls the furthest down a ramp?
Objects that are changing position are said to be in _______
pattern
motion
lubricant
attract
Friction makes movement _____
easier
harder
What is gravity?
A force that pulls down towards the center of a mass
A push or a pull
A force of attraction to a magnet
A force that resists motion
Some students wanted to see if a toy car on an oily surface travels faster than a toy car on a non-oily surface. They used two ramps-one covered with oil and one without oil. The students released a model car on each ramp once. The students should test each ramp three more times to-
write a hypothesis
get accurate data
analyze their procedure
display their results
Three students were using three different magnets to see how many paper clips they could pick up. They were---
X-15 paper clips
Y-12 paper clips
Z-14 paper clips
Place the magnets in order from weakest to strongest.
X,Y,Z
Z,Y,X
X,Z,Y
Y,Z,X
A student is wanting to measure the force needed to move an object. What is the best instrument to find force?
graduated cylinder
scale
ruler
spring scale
Some students predicted that a tennis ball would bounce higher than a golf ball. They conducted one test and found out that the golf ball bounced higher. What should they do to find out if their prediction was correct?
Replace the golf ball with a baseball.
Repeat the test several more times.
Agree that the first test was accurate.
Drop the balls from a higher position.
Matt and Pam placed boards on the curb to race their identical remote control cars on. Matt's board had a rough surface. Pam's board was smooth. Pam's car won 5 our of 5 races. Pam's car was faster that Matt's because of-
tension
pressure
friction
gravity
_____ happens when two items rub against each other
push
gravity
friction
motion
