Energy test
In science class, lab partners Jerry and Kelsey created a circuit by connecting a battery to a small light bulb. Once they connected the wires, the light bulb turned on. This experiment demonstrated which energy change?
Heat energy was changed into light energy.
Light energy was changed into electrical energy.
Chemical energy was changed into electrical energy then changed into light energy.
Electrical energy was changed into light energy and then light energy was changed back into electrical energy.
Chemical energy was changed into electrical energy then changed into light energy.
Shane and Michael are playing catch at the top of a hill. Michael misses the ball and the ball rolls down the hill. What forces are acting on the ball as it rolls down the hill?
Magnets pull on the ball so it will roll down the hill
The ball pushes against the ground while air pulls it down the hill
Grass acts as friction against the ball while gravity pulls it down the hill
The ball picks up speed while the grass created friction trying to stop the ball
Grass acts as friction against the ball while gravity pulls it down the hill
Which statement BEST describes a solid?
A solid has no definite volume or shape.
A solid has a fixed volume and fixed shape.
A solid has a fixed volume and no definite shape.
A solid has no definite volume and a fixed shape.
A solid has a fixed volume and fixed shape.
What kind of energy does a thermometer measure?
chemical energy
electrical energy
light energy
thermal energy
Thermal
What is the tool that measures temperature?
Thermometer
Tracy builds a circuit in order to light a bulb. The circuit includes light bulb, battery, copper wire, and switch. After building the circuit, Tracy finds that the bulb will not light. Which statement is NOT a possible explanation as to why the bulb remains unlit?
The switch is closed.
The light bulb is burned out.
The battery is not providing enough energy.
The wires in the circuit do not make a complete loop.
The switch is closed.
An apple is on a teacher's desk.
Why does the apple remain motionless and NOT fall to the ground?
The apple has no forces acting upon it when it is at rest.
The apple only has the upward force of the desk exerting on it.
The forces applied to the apple are too strong to allow the apple to move.
The desk exerts a force equal to the force of gravity but applied in the opposite direction.
The desk exerts a force equal to the force of gravity but applied in the opposite direction.
Craig has a mixture of salt, pepper, and water. What will happen if Craig pours this mixture through a coffee filter?
The water, salt, and pepper will all pass through the coffee filter.
The water will pass through the coffee filter, leaving the salt and pepper behind.
The water and pepper will pass through the coffee filter, leaving the salt behind.
The water and salt will pass through the coffee filter, leaving the pepper behind.
The water and salt will pass through the coffee filter, leaving the pepper behind.
Joseph is riding a bike. The muscles in his legs use stored energy obtained from food to exert force on the pedals, moving the bike forward. How does Joseph’s pedaling change energy from one form to another?
It transforms electrical energy into energy of motion
It transforms electrical energy into chemical energy
It transforms chemical energy into energy of motion
It transforms mechanical energy into chemical energy
It transforms chemical energy into energy of motion
What is precipitation?
Water falling from clouds
Lena is playing with a remote-controlled car in her backyard. She knows that the car uses a wheel and axle to move. What is the primary source of power for the wheel and axle in the remote-controlled car?
friction between the ground and the tires
chemical energy from the batteries
heat from the batteries
radio waves from the remote control
chemical energy from the batteries
Dobbin pushed five toy cars along a track. The cars were identical except for the colors. Dobbin applied a different amount of force on each car, and then measured the distance it traveled in 10 seconds. His results are recorded in the data table.
DISTANCE DATA FOR CARS
Color of Car Distance Traveled (meters)
Yellow 4.1
Purple 2.6
Green 2.1
Blue 4.2
Black 5.2
Based on his data, which color car did Dobbin push with twice the force of the slowest toy car?
the yellow car
the purple car
the blue car
the black car
the blue car
Which of the following is an example of a chemical change?
shattering a glass vase
gold is formed into a ring
gas is created when water boils
rust is produced when iron is exposed to oxygen
rust is produced when iron is exposed to oxygen
Tania’s mom boils water in a pot on the stove to make homemade soup. Which of the following ingredients will dissolve in the water?
Group of answer choices
garlic
oil
pepper
salt
Salt
What is evaporation?
Water turning into gas
Sarah blows up a balloon and rubs it on her hair to give it a negative charge. Then she moves the same balloon near a pile of small pieces of cut-up paper. The paper pieces move toward the balloon. Why did the paper pieces move toward the balloon?
Objects with opposite charges repel each other.
Objects with the same charge attract each other.
A charged object can attract an uncharged object.
A charged object transfers its charges to uncharged objects.
A charged object can attract an uncharged object.
All objects, regardless of their mass, are pulled with the same gravitational force. Which answer reflects this idea?
A pen and a textbook will fall at the same rate when someone drops them.
Even with the same weight, a basketball will bounce higher than a baseball.
If a feather and a bowling ball are dropped at the same time the feather would float.
Each planet orbits the sun in the same amount of time it takes Earth to orbit the Sun.
A pen and a textbook will fall at the same rate when someone drops them.
Which example of a physical change results from applying heat to a liquid?
The liquid gives off light.
A solid forms in the liquid.
The liquid's color changes.
The liquid’s state of matter changes.
The liquid’s state of matter changes.
Matter may be a gas, solid, or liquid. It can change from one state to another. Which change most often causes matter to change state?
Group of answer choices
change in mass
change in color
change in volume
change in temperature
Temperature
What is an anemometer?
A tool that measures wind speed
Jordan wants to create a closed circuit. Which of the following is an example of a closed circuit?
A light bulb is not lit in the circuit
The circuit is created in a loop using a battery, insulators, and a light bulb
The circuit is created in a loop using a battery, conductors, and the light bulb is lit
Wires in the circuit are connected to a light bulb and made of a conducting material
The circuit is created in a loop using a battery, conductors, and the light bulb is lit
Max tries to move his dresser to a new spot in his room. At first he can only move the dresser a few feet. He decides to take out the drawers of the dresser. What will the result of this be?
Max has changed the mass of the dresser. He will need to apply more force to the dresser to make it move.
Max has changed the mass of the dresser. He will need to apply less force to the dresser to make it move.
Max has not changed the mass of the dresser. He will need to apply the same amount of force to make it move.
Max has not changed the mass of the dresser. He will need to apply more force to the empty dresser to make it move.
Max has changed the mass of the dresser. He will need to apply less force to the dresser to make it move.
Corey sweeps the floor in his dad's workshop and collects a mixture of iron nails, plywood scraps, and sawdust. What would be the FASTEST way to remove the nails?
Heat the mixture.
Dissolve the mixture in water.
Apply a magnet to the mixture.
Pick the nails out of the mixture.
Apply a magnet to the mixture.
Jane likes to play many types of sports. During the course of a week, she goes bowling and plays soccer, baseball, and volleyball. Jane thinks the bowling ball requires the most force to move. Why would it require the most force?
It has the most mass.
She has to throw it indoors.
She has to hold it in her hand
It is all black and the other balls have white on them.
It has the most mass
What is a barometer?
A tool that measures air pressure