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Semester 1 Study Guide

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8th grade Science Quiz on Semester 1 Study Guide, created by Kimberly Mancuso on 13/12/2017.
Kimberly Mancuso
Quiz by Kimberly Mancuso, updated more than 1 year ago
Kimberly Mancuso
Created by Kimberly Mancuso about 7 years ago
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Question 1

Question
When determining the water quality in a local pond, which piece of information is NOT considered quantitative?
Answer
  • the water temperature
  • the pH of the water
  • the number of species living in the pond
  • the color of the water caused by the algae

Question 2

Question
A student has a wagon of a certain mass. He plans to investigate how the acceleration of the wagon changes as the force he exerts on it increases. In his investigation, the independent variable is—
Answer
  • the acceleration of the wagon
  • the force acting on the wagon
  • the mass of the wagon
  • the mass of the student

Question 3

Question
Duckweed is a plant that grows on the surface of ponds. Duckweed has leaf-like structures called fronds. A student conducts a lab investigation on duckweed growth and creates a graph shown above. ​Which of these is a valid conclusion based on the data from this investigation?
Image:
Duckweed (binary/octet-stream)
Answer
  • The number of fronds more than doubled between Days 1 & 4.
  • The number of fronds increased quickly because the plant has a short life span
  • The number of fronds in related to the number of sunlight hours each day.
  • The number of fronds increased at a constant rate between Days 1 & 2.

Question 4

Question
The graph below shows the percent of seeds from two plant species that sprout when grown in water containing different amounts of salt. ​Which of the following best summarizes the effect of saltwater on these plant species?
Image:
Screen Shot 2016 08 08 At 6.22.28 Pm (binary/octet-stream)
Answer
  • Species 1 can sprout only in freshwater, and Species 2 can sprout only in salt water.
  • Both species can sprout in freshwater and saltwater, but Species 2 can sprout in higher salt concentration than Species 1.
  • Both species need salt in their water, but Species 2 needs more salt than Species 1.
  • Species 1 can sprout only in water with a low salt concentration, but Species 2 is not affected by the salt concentration.

Question 5

Question
A student decides to set up an experiment to see if detergent affects the growth of seeds. He sets up 10 seed pots. 5 of the seed pots will receive a small amount of detergent in the soil and will be placed in the sun. The other 5 seed pots will not receive detergent and will be placed in the shade. All 10 seed pots will receive the same amount of water, the same number of seeds, and the same type of seeds. He grows the seeds for two months and charts the growth every 2 days. What is wrong with his experiment?
Answer
  • more than one variable is being tested
  • the students should have a larger number of pots
  • there is no way of measuring the outcome
  • there is no control set-up

Question 6

Question
Kate was conducting an investigation. She placed four buttons of the same size on a large piece of ice. She used a red button, a black button, a green button, and a white button. She placed the ice in direct sunlight for ten minutes, then checked to see which button had sunk deepest into the ice. ​​In order for this to be a controlled investigation, what else should Kate do?
Answer
  • She should place four buttons of other colors on another piece of ice.
  • She should repeat the same setup, but put the ice in a dark place for ten minutes.
  • She should use only two different colored buttons.
  • She should place the ice in direct sunlight for a longer period of time.

Question 7

Question
John has three liquid-filled containers. He wants to know if all three contain the same substance. He conducted an experiment by adding powder to each container. The powder produced bubbles in container A, but not in containers B and C. ​What can John infer from the bubbles?
Image:
Screen Shot 2014 08 29 At 9.57.45 Pm (binary/octet-stream)
Answer
  • Liquids A & B are NOT the same because A formed bubbles while B did not.
  • Liquids A & C are the same because they both did not form any bubbles.
  • Liquids B & C are the same because they both formed bubbles.
  • None of the liquids are the same

Question 8

Question
Sarah’s class collected water density samples from the Gulf of Mexico today as an experiment. ​​According to the measurements, which group’s data is most accurate?
Image:
Screen Shot 2016 08 23 At 7.15.05 Pm (binary/octet-stream)
Answer
  • group 1 because their average is accurate while all other group's averages are not accurate.
  • group 3 because their average is closest in number to their three collections.
  • group 2 because their average is closest in number to their three collections.
  • group 4 because their average is accurate while all other group's averages are not accurate.

Question 9

Question
Sarah designed an experiment to find out which mouthwash was most effective against some bacteria. She cut out four different circles from a paper towel and soaked each circle in a different mouthwash. She put the circles on a nutrient agar-coated petri dish that was covered with bacteria commonly found in the mouth. She then incubated the plate for 24 hours. The picture below shows the results of the test. ​Which of the following should Sarah do to improve her experiment?
Image:
Screen Shot 2016 04 20 At 9.47.38 Pm (binary/octet-stream)
Answer
  • Use the same size paper circles for all mouthwashes
  • Use the same type of mouthwash on each paper circle
  • Use different kinds of bacteria
  • Use a smaller Petri dish

Question 10

Question
The Hertzprung-Russell diagram below shows how the brightness, surface temperature, and color of stars are related.​ Which of these observations of Barnard’s Star is most likely accurate?
Image:
Screen Shot 2017 12 13 At 3.02.50 Pm (binary/octet-stream)
Answer
  • Barnard’s Star is less bright than the sun, has a surface temperature below 3,800 K and is red.
  • Barnard’s Star is less bright than the sun, has a surface temperature above 3,800 K, and is red.
  • Barnard’s Star is brighter than the sun, has a surface temperature below 5,300 K, and is yellow.
  • Barnard’s Star is brighter than the sun, has a surface temperature above 5,300 K, and is yellow.

Question 11

Question
The chart below lists information on four stars within our galaxy in relation to us on Earth. ​​According to this data, which star actually IS the brightest in the list?
Image:
Screen Shot 2016 08 25 At 10.33.33 Pm (binary/octet-stream)
Answer
  • A
  • B
  • C
  • D

Question 12

Question
Astronomers study a star which is 4.1 light-years away from Earth. ​How long does it take light leaving this star to reach Earth?
Answer
  • 4100 years
  • 410 years
  • 41 years
  • 4.1 years

Question 13

Question
Which of the following displays the greatest red shift?
Image:
Redshift (binary/octet-stream)
Answer

Question 14

Question
​The image is of the Electromagnetic Spectrum. The Electromagnetic Spectrum is arranged from high to low [blank_start]frequencies[blank_end] and sort to long [blank_start]wavelengths[blank_end].
Image:
Screen Shot 2016 09 11 At 8.36.44 Pm (binary/octet-stream)
Answer
  • frequencies
  • meters
  • ranges
  • wavelengths
  • wavelengths
  • frequencies
  • meters
  • ranges

Question 15

Question
Chlorophyll is the primary photosynthetic pigment in plants. There are two types: chlorophyll a and chlorophyll b. A scientist tests the absorbance of all wavelengths of visible light by these pigments and records the results in this graph. ​​What evidence would help the scientist to explain why most plants are green?
Image:
Screen Shot 2017 12 13 At 3.20.39 Pm (binary/octet-stream)
Answer
  • Green light has a wavelength of approximately 530nm, which both chlorophyll a & b absorb strongly.
  • Green light as a wavelength of approximately 530nm, which both chlorophyll a & b do not absorb.
  • Green light has a wavelength of approximately 650 nm, which chlorophyll a absorbs strongly, but chlorophyll b does not.
  • Green light has a wavelength of approximately 650 nm, which chlorophyll b absorbs strongly, but chlorophyll a does not.

Question 16

Question
The drawings below represent four different forms of electromagnetic energy. ​Which diagram represents electromagnetic energy with the shortest wavelength?
Image:
19f6q Rrm Zd R Ffp8 Nkp Vm X Ypd8 Hd7 Qzu Tmc1 Kcy Ilf G Kk Og (binary/octet-stream)
Answer

Question 17

Question
What kind of weather can you predict for Kansas City today?
Image:
1 Ez M Cg If Dtxt Fpx 5 Io Yuw7l I Nu Hbl Z A Mc Wk Cck Yu G (binary/octet-stream)
Answer
  • Severe thunderstorms followed by clear skies and colder temperatures
  • Severe weather followed by cloudy skies and warmer temperatures
  • Light rain followed by clear skies and warmer temperatures
  • Rain for several days followed by cooler temperatures

Question 18

Question
What type of weather should be predicted for New Orleans in the near future?
Image:
1 Jjbd C Dtdd Hnj Gdl Ck5sy R5 Z Uh Eb9 Hr Ir6rd Ws Uwb Ffnvew (binary/octet-stream)
Answer
  • Rain for several days followed by warmer temperatures
  • Severe thunderstorms followed by clear skies and colder temperatures
  • Rain for several days followed by cooler temperatures
  • Light rain followed by cloudy skies and warmer temperatures

Question 19

Question
What type of weather should be predicted for Jacksonville, FL today?
Image:
1 Jjbd C Dtdd Hnj Gdl Ck5sy R5 Z Uh Eb9 Hr Ir6rd Ws Uwb Ffnvew (binary/octet-stream)
Answer
  • Light rain followed by cloudy skies and cooler temperatures
  • Severe thunderstorms followed by clear skies and colder temperatures
  • Light rain followed by cloudy skies and warmer temperatures
  • Partly cloudy to clear skies and cooler temperatures

Question 20

Question
According to the map, which state should expect the lowest temperatures?
Image:
1 G51q R4 Tb Wf Do Eh Gha H Kw Dru0o Fxvsp Tl3v Zco Clj Zk1e Rq (binary/octet-stream)
Answer
  • Tennessee
  • New Mexico
  • California
  • South Dakota

Question 21

Question
Which prediction best describes the hurricane’s movement from Friday to Sunday?
Image:
Screen Shot 2014 05 13 At 2.31.37 Pm (binary/octet-stream)
Answer
  • The cold arctic air will carry the hurricane to Europe.
  • The cold arctic air will force the hurricane back to West Africa.
  • The cold arctic air will weaken the hurricane before it hits land.
  • The jet stream will move the hurricane to Europe.

Question 22

Question
The map shows the predicted range of location of a hurricane over a 3-day period and a 5-day period. What is likely to happen with the hurricane during the 4–5 day track?
Image:
Screen Shot 2016 10 05 At 10.10.37 Pm (binary/octet-stream)
Answer
  • Hurricane force winds will hit Mississippi sometime Friday morning.
  • Hurricane force winds will hit Mississippi sometime Wednesday evening.
  • The hurricane will make landfall on Wednesday evening, losing energy as it moves north across Mississippi.
  • The hurricane will become wider as it moves across Mississippi, so that by Friday it will cover the entire state.

Question 23

Question
According to the diagram, how many hours of sunlight will the South Pole have on Earth B?
Image:
Screen Shot 2014 09 03 At 8.38.21 Pm (binary/octet-stream)
Answer
  • 12
  • 24
  • 0
  • 6

Question 24

Question
The Earth rotates on a [blank_start]23.5[blank_end] degree tilt which allows for seasons.
Answer
  • 23.5
  • 24.5
  • 25.5
  • 25

Question 25

Question
The following diagram shows a cross-section of Earth. Which letter represents the location of the asthenosphere?
Image:
Screen Shot 2016 10 21 At 8.59.21 Pm (1) (binary/octet-stream)
Answer
  • A
  • B
  • C
  • D

Question 26

Question
Using the diagram below, what type of plate boundary is shown at B?
Image:
Screen Shot 2017 12 14 At 8.57.33 Am (binary/octet-stream)
Answer
  • Convergent
  • Divergent
  • Transform
  • Constructive

Question 27

Question
In which of the following images are the layer of Earth correctly labeled?
Image:
Screen Shot 2016 10 21 At 8.45.30 Pm (binary/octet-stream)
Answer
  • A
  • B
  • C
  • D

Question 28

Question
label the following image
Image:
Screen Shot 2017 10 23 At 11.41.18 Am (binary/octet-stream)
Answer
  • Asthenosphere
  • Lithosphere
  • Asthenosphere
  • Lithosphere

Question 29

Question
Which of the following best describes why the volcanoes in the Pacific Ocean area are clustered around the Ring of Fire?
Image:
Ringoffire (binary/octet-stream)
Answer
  • It is because of random chance.
  • The coasts of the Pacific Ocean are especially vulnerable to volcanic activity.
  • The heavy weight of ocean water presses upon the Pacific plate, forcing magma to rise to the surface.
  • The Pacific plate meets the continental plates, allowing magma to rise to the surface.

Question 30

Question
​At which location would earthquakes be least likely to occur?
Image:
Screen Shot 2016 10 21 At 9.49.08 Pm (binary/octet-stream)
Answer
  • 1
  • 2
  • 3
  • 4

Question 31

Question
Which location in the diagram represents a subduction zone (AKA subducting plate)?
Image:
Screen Shot 2016 10 21 At 9.49.08 Pm (binary/octet-stream)
Answer
  • 1
  • 2
  • 3
  • 4

Question 32

Question
Which location in the diagram represents a convergent plate boundary?
Image:
Screen Shot 2016 10 21 At 9.49.08 Pm (binary/octet-stream)
Answer
  • 1
  • 2
  • 3
  • 4

Question 33

Question
Which location in the diagram represents a divergent plate boundary?
Image:
Screen Shot 2016 10 21 At 9.49.08 Pm (binary/octet-stream)
Answer
  • 1
  • 2
  • 3
  • 4

Question 34

Question
The two maps below show the change in position of South America and Africa over the last 65 million years. Which of the following best describes the process that caused this outcome?
Image:
Screen Shot 2016 11 07 At 10.11.47 Am (binary/octet-stream)
Answer
  • There is a convergent plate boundary between South America and Africa causing them to spread apart.
  • There is a divergent plate boundary between South America and Africa causing them to spread apart.
  • There is a divergent plate boundary between South America and Africa causing them to come together.
  • There is a transform plate boundary between South America and Africa causing them to spread apart.

Question 35

Question
Which of these describes the outcome of the collision between oceanic and continental crust?
Answer
  • The oceanic crust will subduct beneath the continental crust.
  • The continental crust will subduct beneath the oceanic crust.
  • The two portions of crust will slide past one another, side by side.
  • The two portions of crust will stop moving.

Question 36

Question
Which of the following is most responsible for the formation of new crust at the edge of a tectonic plate?
Answer
  • mountain building at a continent-continent convergent boundary
  • magma rising up from the mantle at a divergent boundary
  • two tectonic plates sliding past one another at a transform boundary
  • subduction of one oceanic plate under another at a convergent boundary

Question 37

Question
About 30 miles into Earth, the speed of seismic waves increases. What does this change in speed indicate about the material through which the seismic waves are traveling?
Answer
  • The waves travel from rock into metal material.
  • The waves travel from cool material in to hot material.
  • The waves travel from a less dense material into a more dense material.
  • The waves travel from solid material into liquid material.

Question 38

Question
Plant cells use photosynthesis to make food. ​Plants cells also use cellular respiration to get energy from the food they make. ​How is cellular respiration different from photosynthesis?
Answer
  • Photosynthesis produces ATP, and cellular respiration produces sugars.
  • Photosynthesis requires oxygen, and cellular respiration requires carbon dioxide.
  • Photosynthesis produces oxygen, and cellular respiration produces carbon dioxide.
  • Photosynthesis requires energy from food, and cellular respiration requires energy from the sun.

Question 39

Question
The diagram below shows a microscope view of a unicellular organism. Four cell structures are labeled. ​ ​Which statement about the labeled structures is correct?
Image:
Screen Shot 2017 01 17 At 8.35.21 Pm (binary/octet-stream)
Answer
  • They normally can be seen without magnification
  • They can survive outside the cell
  • They help carry on life activities within the cell
  • They cause disease within the cell
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