Semester 1 Study Guide

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Question 1 of 39

When determining the water quality in a local pond, which piece of information is NOT considered quantitative?

Select one of the following:

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

Explanation

Question 2 of 39

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—

Select one of the following:

the acceleration of the wagon
the force acting on the wagon
the mass of the wagon
the mass of the student

Explanation

Question 3 of 39

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?

Select one of the following:

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.

Explanation

Question 4 of 39

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?

Select one of the following:

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.

Explanation

Question 5 of 39

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?

Select one of the following:

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

Explanation

Question 6 of 39

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?

Select one of the following:

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.

Explanation

Question 7 of 39

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?

Select one of the following:

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

Explanation

Question 8 of 39

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?

Select one of the following:

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.

Explanation

Question 9 of 39

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?

Select one of the following:

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

Explanation

Question 10 of 39

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?

Select one of the following:

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.

Explanation

Question 11 of 39

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?

Select one of the following:

Explanation

Question 12 of 39

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?

Select one of the following:

4100 years
410 years
41 years
4.1 years

Explanation

Question 13 of 39

Which of the following displays the greatest red shift?

Select one of the following:

Explanation

Question 14 of 39

Select from the dropdown lists to complete the text.

The image is of the Electromagnetic Spectrum. The Electromagnetic Spectrum is arranged from high to low ( frequencies, meters, ranges, wavelengths ) and sort to long ( wavelengths, frequencies, meters, ranges ).

Explanation

Question 15 of 39

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?

Select one of the following:

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.

Explanation

Question 16 of 39

The drawings below represent four different forms of electromagnetic energy.
Which diagram represents electromagnetic energy with the shortest wavelength?

Select one of the following:

Explanation

Question 17 of 39

What kind of weather can you predict for Kansas City today?

Select one of the following:

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

Explanation

Question 18 of 39

What type of weather should be predicted for New Orleans in the near future?

Select one of the following:

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

Explanation

Question 19 of 39

What type of weather should be predicted for Jacksonville, FL today?

Select one of the following:

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

Explanation

Question 20 of 39

According to the map, which state should expect the lowest temperatures?

Select one of the following:

Tennessee
New Mexico
California
South Dakota

Explanation

Question 21 of 39

Which prediction best describes the hurricane’s movement from Friday to Sunday?

Select one of the following:

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.

Explanation

Question 22 of 39

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?

Select one of the following:

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.

Explanation

Question 23 of 39

According to the diagram, how many hours of sunlight will the South Pole have on Earth B?

Select one of the following:

Explanation

Question 24 of 39

Select from the dropdown list to complete the text.

The Earth rotates on a ( 23.5, 24.5, 25.5, 25 ) degree tilt which allows for seasons.

Explanation

Question 25 of 39

The following diagram shows a cross-section of Earth. Which letter represents the location of the asthenosphere?

Select one of the following:

Explanation

Question 26 of 39

Using the diagram below, what type of plate boundary is shown at B?

Select one of the following:

Convergent
Divergent
Transform
Constructive

Explanation

Question 27 of 39

In which of the following images are the layer of Earth correctly labeled?

Select one of the following:

Explanation

Question 28 of 39

Click on each orange point and select the correct answer.

label the following image

Explanation

Question 29 of 39

Which of the following best describes why the volcanoes in the Pacific Ocean area are clustered around the Ring of Fire?

Select one of the following:

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.

Explanation

Question 30 of 39

At which location would earthquakes be least likely to occur?

Select one of the following:

Explanation

Question 31 of 39

Which location in the diagram represents a subduction zone (AKA subducting plate)?

Select one of the following:

Explanation

Question 32 of 39

Which location in the diagram represents a convergent plate boundary?

Select one of the following:

Explanation

Question 33 of 39

Which location in the diagram represents a divergent plate boundary?

Select one of the following:

Explanation

Question 34 of 39

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?

Select one of the following:

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.

Explanation

Question 35 of 39

Which of these describes the outcome of the collision between oceanic and continental crust?

Select one of the following:

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.

Explanation

Question 36 of 39

Which of the following is most responsible for the formation of new crust at the edge of a tectonic plate?

Select one of the following:

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

Explanation

Question 37 of 39

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?

Select one of the following:

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.

Explanation

Question 38 of 39

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?

Select one of the following:

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.

Explanation

Question 39 of 39

The diagram below shows a microscope view of a unicellular organism. Four cell structures are labeled.

Which statement about the labeled structures is correct?

Select one of the following:

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

Explanation

Check answer

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	Created by Kimberly Mancuso over 6 years ago

8th grade Science Quiz on Semester 1 Study Guide, created by Kimberly Mancuso on 13/12/2017.

Semester 1 Study Guide

Question 1 of 39

When determining the water quality in a local pond, which piece of information is NOT considered quantitative?

Select one of the following:

Explanation

Question 2 of 39

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—

Select one of the following:

Explanation

Question 3 of 39

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?

Select one of the following:

Explanation

Question 4 of 39

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?

Select one of the following:

Explanation

Question 5 of 39

Select one of the following:

Explanation

Question 6 of 39

Select one of the following:

Explanation

Question 7 of 39

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?

Select one of the following:

Explanation

Question 8 of 39

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?

Select one of the following:

Explanation

Question 9 of 39

Select one of the following:

Explanation

Question 10 of 39

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?

Select one of the following:

Explanation

Question 11 of 39

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?

Select one of the following:

Explanation

Question 12 of 39

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?

Select one of the following:

Explanation

Question 13 of 39

Which of the following displays the greatest red shift?

Select one of the following:

Explanation

Question 14 of 39

Select from the dropdown lists to complete the text.

​The image is of the Electromagnetic Spectrum. The Electromagnetic Spectrum is arranged from high to low frequencies meters ranges wavelengths( frequencies, meters, ranges, wavelengths ) and sort to long wavelengths frequencies meters ranges( wavelengths, frequencies, meters, ranges ).

Explanation

Question 15 of 39

Select one of the following:

Explanation

Question 16 of 39

The drawings below represent four different forms of electromagnetic energy. ​Which diagram represents electromagnetic energy with the shortest wavelength?

Select one of the following:

Explanation

Question 17 of 39

What kind of weather can you predict for Kansas City today?

Select one of the following:

Explanation

Question 18 of 39

What type of weather should be predicted for New Orleans in the near future?

Select one of the following:

Explanation

Question 19 of 39

What type of weather should be predicted for Jacksonville, FL today?

Select one of the following:

Explanation

Question 20 of 39

According to the map, which state should expect the lowest temperatures?

Select one of the following:

Explanation

Question 21 of 39

Which prediction best describes the hurricane’s movement from Friday to Sunday?

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?

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?

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?

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?

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?

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?

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?

The image is of the Electromagnetic Spectrum. The Electromagnetic Spectrum is arranged from high to low ( frequencies, meters, ranges, wavelengths ) and sort to long ( wavelengths, frequencies, meters, ranges ).

The drawings below represent four different forms of electromagnetic energy.
Which diagram represents electromagnetic energy with the shortest wavelength?

The Earth rotates on a ( 23.5, 24.5, 25.5, 25 ) degree tilt which allows for seasons.

At which location would earthquakes be least likely to occur?