id: 15141
question: Which type of relationship is formed when an epiphytic orchid grows on a tree branch in the canopy?
choice: (A) parasitic (B) mutualistic (C) commensal
context: Read the passage. Then answer the question.
Epiphytic orchids are flowering plants that can grow in tropical forests. An orchid can grow on tree branches in the canopy, or upper layer of the forest.
In the canopy, the orchid gets more sunlight than it would in the shadowy lower parts of the forest. The additional sunlight allows the orchid to perform more photosynthesis. There is also more wind in the canopy, which helps the orchid spread its seeds to other branches.
The orchid does not damage the tree it grows on, but it also does not provide resources to the tree.
Figure: epiphytic orchids growing on trees in a tropical forest.
gold answer: C
wrong prediction:
Rationale:
- 0: When two organisms of different species interact in a way that affects one or both organisms, they form a symbiotic relationship.
- 1: The word symbiosis comes from a Greek word that means living together.
- 2: Scientists define types of symbiotic relationships based on how each organism is affected.
- 3: This table lists three common types of symbiotic relationships.
- 4: It shows how each organism is affected in each type of symbiotic relationship.
- 5: Type of symbiotic relationship | Organism of one species... | Organism of the other species...
Commensal | benefits | is not significantly affected
Mutualistic | benefits | benefits
Parasitic | benefits | is harmed (but not usually killed) When an epiphytic orchid grows on a tree branch in the canopy, it gets more sunlight and wind.
- 6: So, the orchid benefits from its relationship with the tree.
- 7: The tree is not damaged by the orchid, so the tree is not harmed by its relationship with the orchid.
- 8: Since the orchid benefits and the tree is not harmed, a mutualistic relationship is formed when an epiphytic orchid grows on a tree branch in the canopy.
- 9: The answer is B.
id: 15177
question: Would you find the word mill on a dictionary page with the following guide words?
marry - moment
choice: (A) no (B) yes
gold answer: B
wrong prediction:
Rationale:
- 0: Guide words appear on each page of a dictionary.
- 1: They tell you the first word and last word on the page.
- 2: The other words on the page come between the guide words in alphabetical order.
- 3: To put words in alphabetical order, put them in order by their first letters.
- 4: If the first letters are the same, look at the second letters.
- 5: If the second letters are the same, look at the third letters, and so on.
- 6: If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order.
- 7: For example, be comes before bed.
- 8: Put the words in alphabetical order.
- 9: Since mill is not between the guide words marry - moment, it would not be found on that page.
- 10: The answer is A.
id: 15338
question: Which solution has a higher concentration of green particles?
choice: (A) neither; their concentrations are the same (B) Solution A (C) Solution B
context: The diagram below is a model of two solutions. Each green ball represents one particle of solute.
gold answer: B
wrong prediction:
Rationale:
- 0: A solution is made up of two or more substances that are completely mixed.
- 1: In a solution, solute particles are mixed into a solvent.
- 2: The solute cannot be separated from the solvent by a filter.
- 3: For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution.
- 4: In this case, the salt is the solute.
- 5: The water is the solvent.
- 6: The concentration of a solute in a solution is a measure of the ratio of solute to solvent.
- 7: Concentration can be described in terms of particles of solute per volume of solvent.
- 8: concentration = particles of solute / volume of solvent In Solution A and Solution B, the green particles represent the solute.
- 9: To figure out which solution has a higher concentration of green particles, look at both the number of green particles and the volume of the solvent in each container.
- 10: Use the concentration formula to find the number of green particles per milliliter.
- 11: Solution B has more green particles per milliliter.
- 12: So, Solution B has a higher concentration of green particles.
- 13: The answer is C.
id: 15342
question: Would you find the word general on a dictionary page with the following guide words?
gloomy - grew
choice: (A) no (B) yes
gold answer: A
wrong prediction:
Rationale:
- 0: Guide words appear on each page of a dictionary.
- 1: They tell you the first word and last word on the page.
- 2: The other words on the page come between the guide words in alphabetical order.
- 3: To put words in alphabetical order, put them in order by their first letters.
- 4: If the first letters are the same, look at the second letters.
- 5: If the second letters are the same, look at the third letters, and so on.
- 6: If one word is shorter, and there are no more letters to compare, then the shorter word comes first in alphabetical order.
- 7: For example, be comes before bed.
- 8: Put the words in alphabetical order.
- 9: Since general is between the guide words gloomy - grew, it would be found on that page.
- 10: The answer is B.
id: 15526
question: Which animal's legs are also adapted for wading?
choice: (A) hammerkop (B) white tern
context: Great egrets live near marshes, rivers, and lakes. They eat fish, frogs, insects, and small reptiles that live in shallow water. Great egrets hunt their prey by walking through water, or wading.
The 's legs are adapted for wading. They are lightweight and keep the bird's body above the water.
Figure: great egret.
gold answer: A
wrong prediction:
Rationale:
- 0: An adaptation is an inherited trait that helps an organism survive or reproduce.
- 1: Adaptations can include both body parts and behaviors.
- 2: Arms, legs, flippers, and wings are different types of limbs.
- 3: The type of limbs an animal has is an example of an adaptation.
- 4: Animals' limbs can be adapted in different ways.
- 5: For example, long legs might help an animal run fast.
- 6: Flippers might help an animal swim.
- 7: Wings might help an animal fly.
- 8: Look at the picture of the great egret.
- 9: Long legs help the great egret keep its body above the surface of the water while wading.
- 10: Thin legs are easier to move through the water.
- 11: Now look at each animal.
- 12: Figure out which animal has a similar adaptation.
- 13: The white tern has long, thin legs.
- 14: Its legs are adapted for wading.
- 15: The hammerkop has short legs.
- 16: Its legs are not adapted for wading.
- 17: The hammerkop uses its legs to walk, perch, and swim.
- 18: The answer is B.
id: 15543
question: Will these magnets attract or repel each other?
choice: (A) attract (B) repel
context: Two magnets are placed as shown.
Hint: Magnets that attract pull together. Magnets that repel push apart.
gold answer: B
wrong prediction:
Rationale:
- 0: Magnets can pull or push on each other without touching.
- 1: When magnets attract, they pull together.
- 2: When magnets repel, they push apart.
- 3: Whether a magnet attracts or repels other magnets depends on the positions of its poles, or ends.
- 4: Every magnet has two poles, called north and south.
- 5: Here are some examples of magnets.
- 6: The north pole of each magnet is marked N, and the south pole is marked S.
If different poles are closest to each other, the magnets attract.
- 7: The magnets in the pair below attract.
- 8: If the same poles are closest to each other, the magnets repel.
- 9: The magnets in both pairs below repel.
- 10: Will these magnets attract or repel?
- 11: To find out, look at which poles are closest to each other.
- 12: The south pole of one magnet is closest to the north pole of the other magnet.
- 13: Poles that are different attract.
- 14: So, these magnets will attract each other.
- 15: The answer is A.
id: 15583
question: Think about the magnetic force between the magnets in each pair. Which of the following statements is true?
choice: (A) The magnetic force is stronger in Pair 2. (B) The magnetic force is stronger in Pair 1. (C) The strength of the magnetic force is the same in both pairs.
context: The images below show two pairs of magnets. The magnets in different pairs do not affect each other. All the magnets shown are made of the same material.
gold answer: B
wrong prediction:
Rationale:
- 0: Magnets can pull or push on each other without touching.
- 1: When magnets attract, they pull together.
- 2: When magnets repel, they push apart.
- 3: These pulls and pushes between magnets are called magnetic forces.
- 4: The stronger the magnetic force between two magnets, the more strongly the magnets attract or repel each other.
- 5: You can change the strength of a magnetic force between two magnets by changing the distance between them.
- 6: The magnetic force is stronger when the magnets are closer together.
- 7: Distance affects the strength of the magnetic force.
- 8: When magnets are closer together, the magnetic force between them is stronger.
- 9: The magnets in Pair 2 are closer together than the magnets in Pair 1.
- 10: So, the magnetic force is stronger in Pair 2 than in Pair 1.
- 11: The answer is A.
id: 15609
question: Which word does not rhyme?
choice: (A) main (B) bean (C) rain
gold answer: B
wrong prediction:
Rationale:
- 0: Rhyming words are words that end with the same sound.
- 1: The words tip and slip rhyme.
- 2: They both end with the same sound.
- 3: The words meet and treat also rhyme.
- 4: They both end with the same sound, even though the sound has two different spellings.
- 5: The words tip and meet don't rhyme.
- 6: They end with different sounds.
- 7: The words bean and main rhyme.
- 8: They both end with the ain sound.
- 9: The word rain does not rhyme.
- 10: It ends with a different sound.
- 11: The answer is C.
id: 15823
question: Choose the poem that uses alliteration.
choice: (A) The sky is low, the clouds are mean,
A travelling flake of snow
Across a barn or through a rut
Debates if it will go. (B) Look back with longing eyes and know that I will follow,
Lift me up in your love as a light wing lifts a swallow,
Let our flight be far in sun or windy rain—
But what if I heard my first love calling me again?
context: From Emily Dickinson, "Beclouded" and from Sara Teasdale, "The Flight"
gold answer: B
wrong prediction:
Rationale:
- 0: Poets often use the sounds of words to create interesting effects and to express moods and emotions.
- 1: Understanding these elements of poetry can help you better interpret and appreciate poetic forms.
- 2: Anaphora is the repetition of words or sequences of words at the beginning of multiple phrases, sentences, or lines.
- 3: Out of the cradle endlessly rocking,
Out of the mocking-bird's throat, the musical shuttle,
Out of the Ninth-month midnight
—From Walt Whitman, "Out of the Cradle Endlessly Rocking"
Onomatopoeia is when language sounds like what it talks about.
- 4: Sometimes the onomatopoeia uses made-up words:
Tlot-tlot!
- 5: tlot-tlot!
- 6: Had they heard it?
- 7: The horse hoofs ringing clear.
- 8: —From Alfred Noyes, "The Highwayman"
Sometimes the onomatopoeia uses real words:
Hark!
- 9: the honey bee is humming.
- 10: —From Mary Howitt, "The Voice of Spring"
Alliteration is when beginning consonant sounds are repeated in words that are close together.
- 11: Where the wild men watched and waited
Wolves in the forest, and bears in the bush.
- 12: —From Bayard Taylor, "A Night with a Wolf"
Assonance is the repetition of vowel sounds.
- 13: Often, assonance can create rhymes or near-rhymes within lines.
- 14: I wandered lonely as a Cloud
That floats on high o'er Vales and Hills,
When all at once I saw a crowd,
A host of golden Daffodils.
- 15: —From William Wordsworth, "I Wandered Lonely as a Cloud"
Meter is a poem's rhythm, or the pattern of strong and weak syllables.
- 16: Strong syllables are stressed, while weak syllables are unstressed.
- 17: A poem has an iambic meter when the beat sounds like da-DUM.
- 18: A weak syllable is followed by a strong syllable.
- 19: Occasionally, a line may begin with a strong syllable.
- 20: He watches from his mountain walls,
And like a thunderbolt he falls.
- 21: —From Alfred, Lord Tennyson, "The Eagle"
A poem has a trochaic meter when the beat sounds like DUM-da.
- 22: A strong syllable is followed by a weak syllable.
- 23: Occasionally, a line may end in a strong syllable.
- 24: Back into the chamber turning, all my soul within me burning,
Soon again I heard a tapping somewhat louder than before.
- 25: —From Edgar Allen Poe, "The Raven"
Free verse is when a poem has neither a regular rhythm nor a rhyme pattern.
- 26: The old bridge has a wrinkled face.
- 27: He bends his back
For us to go over.
- 28: —From Hilda Conkling, "The Old Bridge"
The syllables in bold are strong.
- 29: You can see this poem does not have a regular rhythm.
- 30: It also doesn't have a rhyme pattern.
- 31: This poem uses alliteration.
- 32: It repeats beginning consonant sounds.
- 33: A travelling flake of snow
Across a barn or through a rut
Debates if it will go.
- 34: The answer is A.
id: 15865
question: Which solution has a higher concentration of purple particles?
choice: (A) neither; their concentrations are the same (B) Solution B (C) Solution A
context: The diagram below is a model of two solutions. Each purple ball represents one particle of solute.
gold answer: A
wrong prediction:
Rationale:
- 0: A solution is made up of two or more substances that are completely mixed.
- 1: In a solution, solute particles are mixed into a solvent.
- 2: The solute cannot be separated from the solvent by a filter.
- 3: For example, if you stir a spoonful of salt into a cup of water, the salt will mix into the water to make a saltwater solution.
- 4: In this case, the salt is the solute.
- 5: The water is the solvent.
- 6: The concentration of a solute in a solution is a measure of the ratio of solute to solvent.
- 7: Concentration can be described in terms of particles of solute per volume of solvent.
- 8: concentration = particles of solute / volume of solvent In Solution A and Solution B, the purple particles represent the solute.
- 9: To figure out which solution has a higher concentration of purple particles, look at both the number of purple particles and the volume of the solvent in each container.
- 10: Use the concentration formula to find the number of purple particles per milliliter.
- 11: Solution A has more purple particles per milliliter.
- 12: So, Solution A has a higher concentration of purple particles.
- 13: The answer is C.