WorksheetsEnergy Transformation, Force & Motion "Weirder Stuff" Review
Total questions: 15
Worksheet time: 30mins
Twelve is using a flashlight in the Rightside Up to try and find her friends. What energy transformation occurs when she turns on the flashlight?
Chemical -> Light
Chemical -> Thermal -> Light
Electrical -> Light
Chemical -> Electrical -> Light
Describe the energy transformations in this SOLAR POWERED flashlight.
electrical -> light -> thermal
light -> electrical -> light
mechanical -> electrical -> light
mechanical -> electrical -> thermal
Henry had two toy-cars. One car uses AA batteries and the other is a pull-back toy car. How do the energy transformations compare between the two toy cars?
Both cars transform electrical energy into mechanical energy.
Two different energy sources are both transformed into mechanical energy.
Both cars transform mechanical energy into electrical energy.
The same energy source is transformed into either thermal or mechanical energy.
Which example shows electrical energy being transformed directly into both thermal energy and mechanical energy?
An electric fan spins its blades to cool a room.
An electric clothes dryer tumbles clothes while producing heat.
An electric lamp produces light when switched on.
An electric speaker plays music loudly.
Observe the illustration. A book is resting on a desk. The book is not moving.
How are forces affecting the book?
The forces on the book are equal in strength and opposite in direction.
The forces on the book are unequal in strength and opposite in direction, so the book begins ot move.
The forces on the book are equal in strength and in the same direction, so the book speeds up.
The forces on the book are unequal in strength and in the same direction, so the forces slow the book down.
Bustin has built a simple electric circuit using a battery, wires, and a small motor that spins a fan blade. The circuit transforms electrical energy into mechanical energy. Which steps are necessary to change the circuit so that it transforms electrical energy into light energy, not mechanical energy?
Replace the battery with a light bulb.
Replace the motor with a light bulb.
Replace one wire with a lightbulb.
Connect the light bulb directly to the motor.
While exploring the eerie woods near Lawkins Trove, Maxie and her friends notice a strange humming sound coming from an old shed. To investigate safely, Max builds a small electric circuit using a battery, wires, and a light bulb so the group can see inside.
Now the friends want the circuit to create mechanical energy instead- so they can power a tiny fan to see if the mysterious humming is caused by moving air.
Which step should Maxie take to change the output energy of the circuit from light to mechanical energy?
Replace the battery with a small electric motor.
Add another battery to increase the brightness of the lightbulb.
Replace one wire with a small electric motor.
Replace the light bulb with a small electric motor.
Twelve uses a slingshot to shoot a small stone into the air towards the miserable monster Lecna. Twelve holds the slingshot at the same angle and pulls the string on the slingshot to different distances, as shown.
Which distance will cause the stone to travel the farthest?
Distance A: 25 centimeters
Distance B: 5 centimeters
Distance C: 20 centimeters
Distance D: 10 centimeters
Bill Wyers builds a ramp using a long board and stacks of textbooks. He tests how fast a marble rolls down the ramp when the height changes. He makes four different ramps by changing how many books are under one end of the board.
Which ramp will the marble be traveling the slowest?
The ramp with 1 book under the board.
The ramp with 2 books under the board.
The ramp with 3 books under the board.
The ramp with 4 books under the board.
While exploring strange activity in the Rightside Up, Lancy and her friends decide to test how different surfaces affect the force needed to move a toy car; just incase they need to transport supplies quickly.
Lancy uses a spring scale to pull the toy car across different surfaces they come across. Which surface will likely require the MOST force to pull the toy car?
A smooth glass surface.
A polished wooden surface.
A rough sandpaper surface.
A tiled floor surface.
A slimy semagorgon and his friends conduct experiments to investigate friction. Which experiment will best test the effect of friction on objects?
Drop two balls from the same height at the same time.
Roll two marbles on the carpet from the same starting point at the same time and with the same amount of force.
Roll three marbles across three different surfaces from the same starting point at the same time and with the same amount of force.
Release two balls from the top of a ramp at the same time.
Bill Wyers and his friends are investigating strange vibrations near Lawkins Lab. They wonder whether the type of surface affects how far a mysterious metal "signal disc" will slide when pushed with the same force.
They test the disc on grass, dirt, concrete, and wood. For each test, they push the disc with the same amount of force and measure how far it travels.
Which answer choice correctly identifies the independent variable, dependent variable, and a control variable in this experiment?
Independent: the force used
Dependent: the type of disc
Control: the type of surface
Independent: the type of surface
Dependent: the distance the disc travels
Control: the pushing force
Independent: the distance the disc travels
Dependent: the type of surface
Control: the weather outside
Independent: the type of disc
Dependent: the pushing force
Control: the distance the disc travels
During a late night crawl in the Rightside Up, near Lawkins Lab, Twelve and her friends burn a glowing campfire to keep them warm while they plan their next move. What forms of energy are produced by the campfire?
mechanical, light, and thermal energy
electrical, light, and mechanical energy
light, thermal, and mechanical energy
light, thermal, and sound energy
Twelve and Lecna are pushing equally hard on a heavy crate, using their mind powers. Why is the crate not moving?
The forces are in the same direction, so the forces are unbalanced.
The forces are in the opposite direction, so the forces are balanced.
The forces are in the opposite direction, so they are unbalanced forces.
The forces are contact forces, so the net force cannot be calculated.
Lecna and his semagorgons are practicing their mind powers near the Lawkins Elementary gymnasium. They place four different balls, each with a different mass, on the gym floor.
1. a rubber bouncy ball
2. a foam playground ball
3. a weighted exercise ball
4. a beach ball
They use their powers to push each ball with the same amount of force across the same smooth floor.
Which ball would roll the shortest distance?
rubber bouncy ball
foam playground ball
weighted exercise ball
beach ball
