Sound
Light
Plants
Animals
Interrelationships
100
Which string will make the lowest pitch when plucked with a finger?
A) string A
B) string B
C) string C
D) string D
D) string D
100
The graphic shows the colors of the visible light spectrum. Why is the color white not included on the spectrum?
A) White is a wavelength that cannot be seen by the human eye.
B) White is the absence of any wavelengths of the visible light spectrum.
C) White is formed by all wavelengths of the visible light spectrum combined.
D) White is created when two wavelengths of the visible spectrum are combined.
C) White is formed by all wavelengths of the visible light spectrum combined.
100
The diagram shows major plant structures.
Which letter shows the part of the plant that is responsible for securing the plant in the soil and absorbing water and nutrients?
A) A
B) B
C) C
D) D
D) D
100
Which term BEST describes this group of living organisms in this coral reef?
A) habitat
B) population
C) community
D) ecosystem
C) community
100
The picture shows a prairie ecosystem. All ecosystems have living and nonliving parts that work together. In the prairie ecosystem, which is an example of a producer?
A) air
B) butterfly
C) sunflower
D) water
C) sunflower
200
This science student is going to blow into each of the five different pipes that make up her instrument. Which of these conclusions is she MOST LIKELY to draw?
A) Pipe E will have the lowest pitch.
B) Each pipe will produce the same pitch.
C) Pipe C will have a lower pitch than pipe A.
D) Pipe D will have a higher pitch than pipe B.
D) Pipe D will have a higher pitch than pipe B.
200
This image shows the electromagnetic and visible spectrums. Based on this image, which list places colors in order from longest to shortest wavelength?
A) green, red, blue
B) red, yellow, green
C) yellow, purple, red
D) blue, orange, purple
B) red, yellow, green
200
What type of plants contain tubes that help transport water and nutrients into their other parts?
A) vascular
B) nonvascular
C) photosynthetic
D) transportive
A) vascular
200
A short food chain is shown here. If a gardener sprayed the area with a chemical that killed the snails, which statement predicts the outcome of the chemical application on the food chain?
A) Organisms at level 3 would increase.
B) Organisms at level 2 would increase.
C) Organisms at level 1 would increase.
D) Organisms at level 1 would decrease.
C) Organisms at level 1 would increase.
200
What is an important role plants play in helping maintain ecosystems?
A) They protect soil from the Sun's harmful rays.
B) They help remove pollutants from water sources.
C) They provide shade for small organisms like insects.
D) They help the cycle of oxygen for other living things.
D) They help the cycle of oxygen for other living things.
300
When Lisa placed a balloon to her ear, she was able to hear what her sister was whispering from the other side of the room. When she removed the balloon, she was no longer able to hear what her sister was saying. What is the best explanation for what Lisa discovered?
A) The material is made of a thick rubber material that stretches and makes sounds seem louder than other materials like wood.
B) There is no air pressure inside the balloon, which makes sound waves travel more quickly.
C) The air in the balloon is not as dense as the air outside the balloon, which makes sound waves echo.
D) Sound does not travel around the air outside of the balloon as well as it does through the denser air pressure inside the balloon.
D) Sound does not travel around the air outside of the balloon as well as it does through the denser air pressure inside the balloon.
300
Light waves are traverse waves that carry energy. These light waves can have different wavelengths, like the one shown in the image. For visible light, what is a difference caused by different wavelengths?
A) Different wavelengths appear as different colors.
B) The longer the wavelength, the more energy carried.
C) The shorter the wavelength, the brighter the light.
D) Different wavelengths move at different speeds in space.
A) Different wavelengths appear as different colors.
300
A water lily is shown here in the diagram. These flowering plants are often found in shallow waters of no more than five-six feet deep. Which statement most likely explains why these aquatic plants are almost always found in shallow water?
A) The plant cannot make seeds to reproduce in water deeper than six feet.
B) The leaves of the plant cannot reach the surface to receive sunlight in water deeper than six feet.
C) The current is too strong in water deeper than six feet for the plant leaves to float at the surface.
D) The plant stems will have a higher rate of attach by fish and other predators in water deeper than six feet.
B) The leaves of the plant cannot reach the surface to receive sunlight in water deeper than six feet.
300
An ocean food chain is shown here. If humans were to remove the detritus from the bottom of the ocean to clean up the sandy bottom, which change would also likely occur in the ocean food chain?
A) The phytoplankton will increase.
B) The nutrient levels will decrease.
C) The nutrient levels will increase.
D) The level of zooplankton will remain unchanged.
B) The nutrient levels will decrease.
300
What advantage does an ant, living in a large colony with other ants, have on an insect that lives alone?
A) The ants can work together to find food.
B) The ants can survive by not reproducing.
C) The ants can go longer periods without eating food.
D) The ants can move their home from one location to another easier.
A) The ants can work together to find food.
400
This diagram shows the frequency of sound waves, or sound energy. Humans are unable to hear sounds with higher frequencies. Which wave is most likely to be heard by the human ear?
A) Wave A
B) Wave B
C) Wave C
D) Wave D
A) Wave A
400
Interactions with light are found all around in nature. Which of these is an example of reflection found in nature?
A) Images of the trees lining the lake can be seen on the lake's surface.
B) Rivers in Alaska start to freeze when days become shorter in the winter.
C) The snow begins to melt in spring as it absorbs sunlight during longer days.
D) A tree branch partially under water appears to be bent near the water's surface.
A) Images of the trees lining the lake can be seen on the lake's surface.
400
Based on the chart, which two types of light are BEST used for photosynthesis?
A) Plant light and black light
B) Natural sunlight and plant light
C) Incandescent light and black light
D) Incandescent light and natural sunlight
D) Incandescent light and natural sunlight
400
Compare the trophic levels with the food chain. What organism would be appropriate to fill the niche of primary consumer in this situation?
A) fungi
B) insect
C) sunflower
D) worm
B) insect
400
These bass fish larvae swim in groups, known as schools. What would be an advantage to the survival of the bass fish larvae by traveling in large groups?
A) They can attack fish that swim separately.
B) Weaker fish do not have to swim as quickly.
C) Individuals are harder to attack in groups.
D) Individual fish do not get lost while traveling.
C) Individuals are harder to attack in groups.
500
Donna and Laurel are playing a game in their pool. One person goes under the water, while the other person says a few words. The person under the water must restate what the person above the water said.
Why is the game hard for the person under the water?
A) The water absorbs the sound wave, so that no sound can be heard above the water.
B) Sound waves travel the fastest through liquids because the molecules are closely packed.
C) The sound waves are not able to travel in the water at all because there are no molecules.
D) The water is more densely packed with molecules, and the sound wave does not vibrate the eardrum.
D) The water is more densely packed with molecules, and the sound wave does not vibrate the eardrum.
500
The image shows light bouncing off of mirrors at the same angles that it strikes the mirrors.
What does this tell you about light rays?
A) that light is refractive
B) that light travels in a straight line
C) that light does not travel in a straight line
D) that light reflected from a flat mirror travels in a straight line
D) that light reflected from a flat mirror travels in a straight line
500
These peas are called sugar snap peas. They taste sweet. Plants make food, a sugar, in their leaves using photosynthesis. How does the sugar get from the leaves to the peas in these pods?
A) The sugar moves through the xylem.
B) The sugar moves through the phloem.
C) The sugar moves through the stomata.
D) The sugar moves through the plant cells' vacuoles.
B) The sugar moves through the phloem.
500
A salmon lives in different places during its life cycle. They are born in freshwater rivers and streams and later migrate to the ocean until they reach the age of reproduction. At that time, they swim upstream to reach fresh water rivers and streams again. What can you conclude happens next in the life cycle?
A) The salmon decide if they like fresh water or salt water better as an adult salmon.
B) The adult salmon lay eggs in the freshwater and they hatch into young salmon.
C) The salmon grow and thrive in the water of the ocean.
D) The salmon lay their eggs in the cold ocean waters.
B) The adult salmon lay eggs in the freshwater and they hatch into young salmon.
500
Which of these scenarios will upset the stability of the local ecosystem the MOST?
A) A tree is cut down to be used for firewood.
B) A hiking trail is cleared through the state park in your area.
C) A person decides to build their small home in the middle of a forest.
D) A local factory clears land to build and blocks the flow of the only river in the area.
D) A local factory clears land to build and blocks the flow of the only river in the area.