Plants
The student concluded that plant B would survive better than plant A during a period without rain. Why did the student most likely make this conclusion?
A. The hair-like structures on the roots increase its ability to absorb light from the Sun.
B. The hair-like structures on the roots increase its ability to absorb water from the soil.
C. The hair-like structures on the roots increase its ability to store food made by the plant.
D. The hair-like structures on the roots increase its ability to release heat into the environment.
B. The hair-like structures on the roots increase its ability to absorb water from the soil.
The oldest rock layer is always found at the _______.
bottom
A student read that some people place large plastic owls in areas where they want to prevent birds from gathering. The student decided to conduct an investigation. Over three weeks, the student counted the number of birds that were present in an area when a plastic owl was not used. Then, over the next three weeks, the student counted the number of birds that were present in the same area when the plastic owl was used.
Which statement most likely explains what the student observed?
A. Other birds avoid owls.
B. Owls avoid other birds.
A. Other birds avoid owls.
What is true about earthquakes?
A. Earthquakes occur in random locations.
B. Most earthquakes occur in the Southern Hemisphere.
C. The strongest earthquakes occur near the middle of oceans.
D. Most earthquakes occur along boundaries between continents.
D. Most earthquakes occur along boundaries between continents.
In order to see a tree, the eye _________ and the tree _________.
absorbs light, reflects light
What is the function of the leaves?
Known as the "food factory," leaves catch sunlight and use it to make food for the plant.
What change happens to a water wave as the wave gets closer to the coastline?
A. wavelength increases
B. amplitude increases
C. wavelength decreases
D. amplitude decreases
B. amplitude increases
One student claimed that all the birds have different beak shapes because their beaks help the birds survive. Which statement best supports the student’s claim?
A. The main function of a beak is to obtain food.
B. The main function of a beak is to build nests.
C. The main function of a beak is to take in oxygen.
D. The main function of a beak is to protect the bird from predators.
A. The main function of a beak is to obtain food.
A school wants a plan to keep people safe when there is a tornado. Which two solutions are most likely to keep people at the school safe if a tornado is near?
A. announcing a warning
B. turning off building lights
C. locking classroom windows and doors
D. preparing students to ride home on school buses
E. moving students out of classrooms to inside hallways
A. announcing a warning, E. moving students out of classrooms to inside hallways
At the beach, the wind blows almost all the time. The wind is the main cause of waves at the beach. People near the coast sometimes use wind as an energy source to provide electricity to homes and businesses.
Which statement is true?
A. A faster blade speed will produce more energy.
B. A slower blade speed will produce more energy.
C. More energy production will cause faster blade speeds.
D. Less energy production will cause slower blade speeds.
A. A faster blade speed will produce more energy.
What is the function of the stem?
The stem supports the plant and has tiny tubes (xylem/phloem) that carry water, nutrients, and food to and from the roots and leaves.
Layers of the Grand Canyon
Kaibab Limestone
Toroweap Limestone
Coconino Sandstone
Hermit Shale
Supai Group
Redwall Limestone
Muav Limestone
Bright Angel Shale
Tapeats Sandstone
Which statement best describes the Redwall Limestone layer in the Grand Canyon?
A. It is older than the Bright Angel Shale layer because it is above the Bright Angel Shale layer.
B. It is the same age as the Kaibab Limestone layer because they are both limestone layers.
C. It is younger than the Supai Group layer because it is a thinner layer than the Supai Group layer.
D. It is older than the Coconino Sandstone layer because it is below the Coconino Sandstone layer.
D. It is older than the Coconino Sandstone layer because it is below the Coconino Sandstone layer.
What is a habitat?
A habitat is a specific place where an animal or plant lives, providing food, water, and shelter.
During some storms, lightning can strike objects and cause them to burn. Also, lightning causes thunder, which observers can hear. Which statement best describes how energy is transformed by lightning?
A. Sound energy is transformed into light and heat energy.
B. Light energy is transformed into electrical energy.
C. Electrical energy is transformed into light, heat, and sound energy.
D. Light, heat, and sound energy are transformed into electrical energy
C. Electrical energy is transformed into light, heat, and sound energy.
W no can harm wildlife
X no causes air pollution
Y yes can harm wildlife
Z yes causes air pollution
Which student best describes the offshore wind turbines?
A. Student W
B. Student X
C. Student Y
D. Student Z
C. Student Y
True or False: Leaves are only used for keeping the plant cool.
False (they make food).
Which conclusion about mountain ranges in North America can best be made?
A. Mountain ranges formed evenly over North America.
B. Most mountain ranges formed near the edges of North America.
C. All mountain ranges in North America formed close to one another.
D. The mountain ranges in North America formed in the east and spread toward the west
B. Most mountain ranges formed near the edges of North America.
How does camouflage help an animal?
It helps an animal blend into its surroundings to hide from predators.
What tool measures earthquakes?
Seismograph
People depend on energy to produce electricity. Water power plants get energy from moving water. Like the marble rolling down the ramp, water enters a dam and flows downward. The moving water provides energy that spins the turbine, causing the generator to produce electricity.
Which claim can best be made about the electricity in the water power plant?
A. The electricity is made by using a human-made resource.
B. The electricity is made by using a renewable resource.
C. The electricity is made by using a nonrenewable resource.
B. The electricity is made by using a renewable resource.
What does a plant need to survive and grow?
Air, nutrients (from soil), water, and light.
A student wants to demonstrate how water helped in the formation of the Grand Canyon. Which procedure would best model the process that formed the Grand Canyon?
A. Slowly add water to cover sand in a tray to model the effect of a flood.
B. Let several ice cubes melt in a tray of sand to model the effect of a melting glacier.
C. Lightly spray water from a hose above a tray of sand to model the effect of falling rain.
D. Pour a narrow stream of water down a tilted tray of sand to model the effect of flowing water.
D. Pour a narrow stream of water down a tilted tray of sand to model the effect of flowing water.
How do humans affect ecosystems?
Through pollution, deforestation, and using up natural resources.
Where is the safest place during an earthquake?
In a secure door frame or under a sturdy piece of furniture like a table.
Which form of energy is produced by vibrations traveling through matter?
Sound Energy