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Semester Exam Science 7 2020-21 Flashcards | StudBud
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Semester Exam Science 7 2020-21
Semester Exam Science 7 2020-21
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1
62. Based on the principle of photosynthesis, Why are plants important to the health of animals? [DOK 2, MS-PS1-6]
Plants provide animals with the water needed for cellular function.
Plants provide animals with the glucose and oxygen needed for cell function
Plants provide animals with the carbon dioxide needed for cellular function
Plants provide animals with the water and oxygen needed for cell function
2
58. Identify if each picture is an atom, element, compound or molecule or more than one answer. [DOK 2, MS-PS1-1]
atom
compound
molecule
element
3
Identify pieces of evidence that point to the bath bomb and water undergoing a chemical reaction (select all that apply)
the bath bomb breaking apart
change in smell of the mixture
the water moving around when the bomb is dropped
production of a gas
4
8. Metal melting is an example of a [DOK 2, MS-PS1-2]
chemical reaction.
chemical property.
chemical change.
physical change.
5
33. How is ATP used? [DOK 1, MS-PS1-7]
to make glucose.
for everything we do.
to make oxygen.
to only move our muscles.
6
26. Where do plants get MOST of their mass? [DOK 1, MS-PS1-6]
sunlight
carbon dioxide
hydrogen
soil
7
54. Why do plants and animals need each other?Select all that apply. [DOK 2, MS-PS1-7]
Plants get carbon dioxide from animals.
Plants get oxygen from animals.
Animals get oxygen from plants.
Animals get glucose from plants.
8
53. How are photosynthesis and cellular respiration related to one another? [DOK 2, MS-PS1-6]
Cellular respiration makes glucose and photosynthesis breaks it down.
They are reverse reactions or opposites of each other.
They create the same molecules in their reactions.
They both create energy for the plant and make oxygen.
9
19. Due to the Law of Conservation of Mass, the mass of the reactants must be ______ to the mass of the products.
unrelated
greater than
equal to
less than
10
56. Identify if each picture is an atom, element, compound or molecule or more than one answer. [DOK 2, MS-PS1-1]
element
molecule
compound
atom
11
40. What happens to energy as you move up the energy pyramid/chain? [DOK 2, MS-LS2-3]
Energy cannot be measured.
Energy stays the same.
Energy increases.
Energy decreases.
12
10. Which of the following is a chemical property? [DOK1, MS-PS1-2]
malleability
flammability
color
density
13
39. What are the 3 main energy roles in an ecosystem and how does each obtain energy? Energy from other organisms
Producer
Consumer
Decomposer
14
7. A new material formed in a chemical reaction is called a(n) [DOK 1, MS-PS1-2]
product.
reactant.
atom.
element.
15
57. Identify if each picture is an atom, element, compound or molecule or more than one answer. [DOK 2, MS-PS1-1]
atom
compound
molecule
element
16
51. What event within the food chain might lead to the graph shown below? [DOK 2, MS-LS2-3]
An increasing population of hawks.
A disease in the population of rabbits.
A higher than normal population of snakes.
A decreasing population of grasses.
17
4. Is this statement true: only humans do cellular respiration. If not, revise the statement so that it is true.
The statement is true.
False, only underwater organisms do cellular respiration.
False, plants and humans do cellular respiration.
False, only plants do cellular respiration.
18
24. In our bath bomb experiment the reactants are (select all that apply). [DOK 2, MS-PS1-2]
Bubbles
Bath bomb
Pink water
Water
19
22. Which of the following is correct about burning a campfire? [DOK 2, MS-PS1-5]
It doesn't follow the Law of Conservation bc burning doesn't destroy matter
It does not follow the Law of Conservation because burning destroys matter.
It does follow the Law of Conservation bc burning doesn't destroy matter.
It does follow the Law of Conservation because burning destroys matter.
20
38. Use the picture to answer the following question: The process taking place above is called...? [DOK 2, MS-PS1-6]
reproduction.
cellular respiration.
photosynthesis.
digestion.
21
11. Which of the following is NOT considered matter? [DOK 1, MS-PS1-1]
air
rock
water
heat
22
39. What are the 3 main energy roles in an ecosystem and how does each obtain energy? Energy from dead organisms
Consumer
Decomposer
Producer
23
39. What are the 3 main energy roles in an ecosystem and how does each obtain energy? Energy from the Sun
Decomposer
Consumer
Producer
24
59. If you were able to zoom into a chemical reaction, how would the atoms be behaving? [DOK 2, MS-PS1-2]
the atoms would be be rearranging to form the same molecules as before
each individual atom would be changing to a new element
the atoms would stay the same in both form and size
the atoms would be be rearranging to form new molecules
25
2. Why do we feel like we have more energy after eating a sugary candy bar? [DOK 2, MS-LS1-7]
There is no difference in energy.
The candy bar is made of more ATP.
The candy bar is made of more glucose, which gets converted to ATP.
The candy bar has more ingredients that give us energy.
26
16. Which of the following carries a negative charge? [DOK 1, MS-PS1-1]
proton
neutron
electron
nucleus
27
61. Using your know knowledge of atoms, Why does each element have its own unique properties? [DOK 2, MS-PS1-1]
An atom of each element has a unique # of protons, neutrons, and electrons.
An atom of each element has differently charged protons.
An atom of each element has differently sized neutrons.
An atom of each element has different electron orbit limits.
28
27. Which summarizes photosynthesis? [DOK 1, MS-PS1-6]
glucose + oxygen = glucose + water
carbon dioxide + water = glucose + oxygen
carbon dioxide + water = oxygen + water
carbon dioxide + oxygen = glucose + water
29
Organize this food chain: the rabbit is a herbivore, the grass photosynthesizes, the python is a carnivore.
python> rabbit> grass
rabbit> python> grass
grass> python> rabbit
grass> rabbit> python
30
25. What claim did we prove true in our bath bomb experiment? [DOK 2, MS-PS1-5]
The gas is not new matter, but comes from what was already there.
The gas is part of the bath bomb itself, trapped inside it.
The gas comes from new matter separate from the combo of bath bomb & water.
The gas was in the water waiting to be released.
31
18. Due to the Law of Conservation, products and reactants in chemical reactions must ____ [DOK 1, MS-PS1-5]
contain the exact same compounds.
have a different number of atoms.
be reversible.
have the same number of atoms.
32
All organisms on Earth obtain energy from the photosynthetic organisms, it could be said that all energy comes from:
food.
carbon dioxide.
plants.
the Sun.
33
23. The Law of Conservation states matter cannot be _____ nor ______. Select two answers. [DOK 1, MS-PS1-5]
destroyed
burned
shifted
created
34
42. What type of organism always starts the food chain? [DOK 1, MS-LS2-3]
consumer
decomposer
producer
herbivore
35
5. How could an ecosystem to collapse? Select all that apply. [DOK 2, MS-LS2-1]
Removing the top consumer.
Removing all the producers.
Disease in the producer population.
Blocking the Sun.
36
45. The word conservation also means: [DOK 1, MS-PS1-5]
save.
changes.
broken.
eliminate.
37
12. What is the smallest unit of matter? [DOK 1, MS-PS1-1]
element
atom
molecule
compound
38
36. Use the diagram to answer the following question: What should be used to fill the box labeled X? [DOK 2, MS-PS1-6]
oxygen
cellular respiration
decomposition
carbon dioxide
39
9. Paper burning is an example of (select all that apply) [DOK 2, MS-PS1-2]
molecules rearranging.
change in state of matter.
chemical change.
physical change.
40
32. What is the energy molecule made from cellular respiration? [DOK 1, MS-PS1-7]
glucose
carbon dioxide
oxygen
ATP
41
50. What event within the food chain might lead to the graph shown below? [DOK 2, MS-LS2-3]
A disease in the population of rabbits.
A disease in the population of hawks.
It is impossible to tell which of the above occurred.
A disease in the population of snakes.
42
28. What is the organelle of photosynthesis? [DOK 1, MS-PS1-6]
the nucleus
the chloroplast
the mitochondria
the endoplasmic reticulum
43
48. What do the respiratory system and cellular respiration have in common?
Resp system in CO2 for cell resp and breathes out O2 like cell resp does
Resp system in oxygen for cell resp & breathes out glucose like cell resp
Resp system brings in O2 for cell resp & breathes out CO2 like cell resp
Resp system in CO2 for cell resp & breathes out glucose like cell resp does
44
43. Which population has the largest numbers in a food chain? Why? [DOK 2, MS-LS2-3]
Consumers, because they have the most energy.
Scavengers, because they gain the most energy from the food they eat.
Consumers, because there is enough energy to support them.
Producers, because they have the most energy.
45
13. What is made of two or more atoms bonded together? [DOK 1, MS-PS1-1]
compound
atom
element
molecule
46
37. Use the diagram to answer the following question: What should be used to fill the box labeled Y? [DOK 2, MS-PS1-7]
oxygen
decomposition
cellular respiration
carbon dioxide
47
29. What is the organelle of cellular respiration? [DOK 1, MS-PS1-7]
the endoplasmic reticulum
the nucleus
the mitochondria
the chloroplast
48
3. Can a food chain start with a consumer? [DOK 2, MS-LS2-1]
No, only producers can take in energy from the Sun.
No, because only producers eat other organisms for energy.
Yes, because the consumer can take in the Sun's energy.
Yes, because consumers eat other organisms for energy.
49
17. Which of the following carries a neutral charge? [DOK 1, MS-PS1-1]
neutron
nucleus
electron
proton
50
49. ATP is to your cells as ___ is to a car. [DOK 2, MS-PS1-7]
steering wheel
engine
tires
gasoline
51
15. In the image, which letter is pointing to the nucleus? [DOK 1, MS-PS1-1]
D
A
B
C
52
55. How would you explain the difference between a physical and chemical change to a new chemistry student?
Chemical changes make a new substance, while physical changes do not.
Chemical changes change the state of matter, while physical changes do not.
Chemical changes do not make a new substance, while physical changes do.
Chemical changes do not change color while physical changes do.
53
He mixed vinegar and baking soda in a closed bottle. The mass prior =48 g. What will the mass be AFTER the bottle opens?
Exactly 48 grams.
Slightly more than 48 grams.
Less than 48 grams.
Significantly more than 48 grams.
54
47. What might happen if plants did not make glucose? [DOK 1, MS-PS1-6]
They could not absorb energy from the Sun.
They would not be green.
They could not grow and function.
They would not have leaves.
55
31. Which of the following is a producer? [DOK 1, MS-PS1-6]
the Sun
plants
carbon dioxide
humans
56
44. What is true of a substance with a lot of mass? [DOK 1, MS-PS1-5]
It has high density.
It has low frequency.
It contains a lot of matter.
It has a large volume.
57
14. In the image, which letter is pointing to the electron? [DOK 1, MS-PS1-1]
D
C
A
B
58
46. In what way does plant nutrition differ from human nutrition? [DOK 2, MS-PS1-7]
Plants cannot make their own food; humans can.
Plant nutrition consists of protein; human nutrition consists of carbs.
Plants absorb their nutrients from the Sun; humans get theirs from food.
Plants make their own nutrients; humans must consume theirs.
59
34. What are the reactants of cellular respiration? Select all that apply. [DOK 1, MS-PS1-7]
carbon dioxide
oxygen
glucose
water
60
35. How do we get the glucose our bodies need? [DOK 1, MS-PS1-7]
exercising
drinking water
breathing
eating
61
41. What are the 4 main types of consumers? Select 4 answers. [DOK 1, MS-LS2-3]
Omnivore
Scavenger
Carnivore
Herbivore
62
6. Can we use chemical and physical properties to identify a mystery substance? [DOK 2, MS-PS1-2]
No, because the properties depend on the amount of the substance.
No, because properties of a substance never change.
Yes, because the properties depend on the amount of the substance.
Yes, because properties of a substance never change.
63
He mixed vinegar and baking soda in a water bottle. The whole mass prior was 48 grams. What should the mass be after?
Around 48 grams.
More than 48 grams.
Less than 48 grams.
Exactly 48 grams.
64
1. Which of the following statements correctly compares a chemical property of apples and oranges? [DOK 2, MS-PS1-2]
Oranges have a rough skin, while apples have a smooth skin.
Oranges and apples are not reactive.
Oranges are orange in color, while apples can be red, yellow or green.
Oranges and apples have a different smell.
