Forces and Energy
Using Energy
Our Dynamic Earth
Information Processing and Living Things
Random Choice
100
Lola placed a copper rod at room temperature into a flask of boiling water.
After five minutes, the end of the copper rod was hot to the touch. Which of the following does this indicate?
Energy was transferred from the water to the rod.
100
The machine shown below is used to pump oil out of the ground.
This oil can then be used to make gasoline, heating oil, and many other products. Oil is an example of _______.
A nonrenewable resource.
100
The map below shows earthquakes that occurred in the continents of North and South America in February of 2018. Which statement best describes the locations of the earthquakes shown in the map?
Earthquakes often occur in bands along the boundaries of oceans and continents.
100
An armadillo has a tough leathery shell that covers its back and sides. What is the function of an armadillo's shell?
It protects an armadillo against predators.
100
The picture below shows a seawall. 
Seawalls are sometimes built around cities next to the ocean. They are big structures that slope down from the land to the ocean. A seawall would most likely help reduce the impact of which of the following?
Waves from a tsunami.
200
The diagram below shows the speed that a student ran at each point on a track.
Which of the following is true?
The student had more energy of motion at point Y than he did at point W.
200
A student is drawing a model to show how a person's eye is able to see a beach ball. He has started his drawing, but it is incomplete.
The student needs to draw two arrows to represent how light and the eye interact to allow vision. Which of the following best describes the arrows that the student needs to draw to complete the diagram?
The student needs to draw an arrow that points from the bulb to the ball, and an arrow that points from the ball to the eye.
200
The picture below shows a river that has cut through rock layers and created a canyon. Which statement best describes the ages of the rock layers of the rock in the canyon?
Rock layers W and Y are the same age, and the rock layers X and Z are the same age.
200
Milkweed is a plant that grows in meadows. Milkweed has large seed pods. The pods have a lot of small brown seeds. The picture below shows milkweed seeds coming out of their pod. Each seed is attached to some fuzzy white material. This material is very light. It helps the seed travel in the wind.
To grow into new plants that may be far away.
200
A topographic map is shown below.
Which point on the map most likely shows a mountain peak?
Point T.
300
The fan below has been plugged into an electrical outlet.
When Jacob stands in front of the fan, he can feel air blowing on him. Jacob can feel the air blowing because the fan is changing electricity into _______.
The energy of motion.
300
Solar panels, like the ones shown below, can be used to absorb energy from the Sun.
The energy gathered by these panels can then be used to produce electricity. How does using solar panels to produce electricity compare with using fossils fuels for the same purpose?
Solar panels generate less air pollution.
300
The house shown below is built on stilts. The stilts help protect the house from getting damaged by what kind of severe weather?
Flooding.
300
A dog is standing at a distance from where the food bowl is kept. What must happen for the dog to smell the food?
The dog's brain must process the signal.
300
The diagram below shows fossils in three different rock layers.
There are fossils of reptiles that lived on dry land in the top layer, and fossils of fish and shells in the bottom layer. What does this show about the environment in which the rock layers were formed?
It changed from water to dry land over time.
400
John is about to push the "shooter" marble toward the other marbles that are at rest. The "shooter" is the marble that is pushed in order to strike the other marbles.
What will happen when the shooter marble hits the other marbles?
The other marbles will gain energy.
400
The picture below shows two girls using a rope to model waves. To model the waves, the girl on the left holds her end of the rope tight, and the girl on the right moves the rope up and down.
How could the girls increase the wavelength of the waves they are producing?
They could move the rope up and down more slowly.
400
The picture below shows the fossil of an extinct organism called an ammonite. Ammonites were similar to the squids and octopuses that live in the ocean today, but ammonites had a hard shell.
This ammonite fossil was found in an environment that is now a hot, dry desert. What does this show about the environment?
The environment was once covered with water.
400
A student is preparing a flowchart to represent how an animal's sense of smell is related to the animal's response to that smell. Which flowchart would be best for her to make?
information gathered by the nose → information processed by the brain → response produced
400
Conrad is investigating how different amounts of rainfall affect erosion. He uses the materials shown below during his investigation.
During his first trial, Conrad completely filled the water bottle and lightly squeezed it. The water slowly dripped onto the sand and eventually made its way to the drain hole. What should Conrad change during trial two in order to determine how different amounts of rainfall affect erosion?
The amount of water in the bottle.
500
Morse code is a method of sending information using dots and dashes. For example, three dashes stand for the letter O. Often, dots and dashes are sent using signals that can travel through wires or by radio waves. These signals are heard as a series of tones or clicks by the listener. At other times, dots and dashes can be sent visually by turning a bright light on and off in the correct pattern. In which case would Morse code be the best way to transfer information?
When information is needed by someone who is far away.
500
Sally is trying to understand how she is able to see her cupcake. She makes a diagram of how light travels to her eye. The pictures below show the different paths the light can take. 
Which picture best shows the path the light takes so Sally is able to see the cupcake?
Diagram A.
500
The diagram below shows dinosaur and plant fossils in layers of rock. Layer C was formed by lava from a volcano.
Using the fossils as evidence, what best explains the events that occurred in this location?
A volcanic eruption led to the extinction of different types of dinosaurs.
500
The pictures below show a pelican, a dolphin, and a goat.
These animals have different structures, but they must perform many of the same functions. What function do the pelican's wing, the dolphin's flipper, and the goat's hoof all share in common?
They help the animals move around their environments.
500
A circuit made up of wires, a battery, a bell, and a switch is shown below.
When the switch is turned on, the bell rings. This circuit transforms electrical energy into _______.
Sound energy.