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WorksheetsEnd of Year Review
Total questions: 42
Worksheet time: 1hrs 5mins
SC.7.N.1.4
Keesha did an experiment to study the rate of photosynthesis in the water plant Elodea. She placed a piece of Elodea in a beaker of water and set the beaker 10 centimeters (cm) from a light source. Keesha counted the bubbles released from the plant every minute for five minutes (min). She repeated the process two more times. First, she moved the light to 20 cm from the beaker, and then she moved the light to 30 cm from the beaker. Keesha’s setup and data are shown below
NUMBER OF BUBBLES
Time (min) Distance (cm)
10 cm 20 cm 30 cm
1 min 30 5 1 <--(bubbles)
2 min 29 5 1
3 min 31 6 3
What is the outcome variable (dependent variable) in this experiment?
the number of bubbles produced
the type of plant placed in the beaker
the amount of time the bubbles in the beaker
the distance of the light source from the plant
SC.8.E.5.3
Karla and Carlos are making observations about the night sky. As they look up at the stars they notice that some of them look brighter than others while some can't even be seen at all. They though about the sun in our solar system and though, why is it that some stars are larger than our sun but seem to look much smaller?
The stars being observe in the night sky are actually much smaller than the sun
The stars being observed in the night sky are much closer than the sun
The stars being observe in the night sky are much further than the sun
The stars been observed are dwarfs stars only
Helen is studying the growth of two different types of plants. She planted two of each type of plant in locations with different levels of sunlight: full sun, partial shade, and full shade. For five weeks, Helen records the number of new leaves on each plant.
Which of the following statements correctly describes the independent and dependent variables in Helen's experiment?
The independent variable is the kind of plant, and the dependent variable is the amount of sunlight.
The independent variable is the amount of sunlight, and the dependent variable is the number of new leaves.
The independent variable is the amount of sunlight, and the dependent variable is the kind of plant.
The independent variable is the number of new leaves, and the dependent variable is the amount of sunlight.
What is a hypothesis
An idea in science
A question and or prediction about a phenomenon
An idea backed by tested factual evidence
Data and facts from experimentation
An experiment
A scientist wanted to know more about these blue birds at a beach. He goes to the beach and he writes down everything he sees the birds doing and all the sounds they make. This is an example of which scientific tool?
observation
analysis
hypothesis testing
replication
Ms G wants to see if the type of fertilizer affects the height of a sunflower plant. What is the dependent variable?
type of fertilizer
height of the sunflower plant
amount of fertilizer
health of the sunflower plant
SC.7.N.1.2
Cara read an article on why repetition and replication are so important, but she did not understand the difference between them. Which of the following best explains the two terms?
a. Repetition is when a scientist repeats an experiment; replication is when a scientist conducts an experiment on genetic material.
b. Repetition is when a scientist does the same experiment a number of times; replication is when other scientists reproduce a scientist’s experiment.
c. Repetition is when a scientist publishes in more than one scientific periodical; replication is when another scientist reproduces another scientist’s results.
d. Repetition is when a scientist commits an error in an experiment the first time and must repeat it; replication is when a scientist repeats an experiment to make sure it is valid.
a
b
c
d
SC.8.E.5.3 SC.8.E.5.7
What is the main differences between the inner planets and the outer planets in our solar system?
There are no major differences between the inner and outer planets in our solar system
The only differences between the inner and outer planets in our solar system is that Earth is the only with life
The inner planets in our solar system are terrestrial (rocky) in composition and small and the outer planets are gas giants.
The inner planets are necessary in the solar system while the outer planets do not really matter
SC.8.E.5.3
The larger the mass of a planet the larger
The distance from the sun
The larger the gravitational force would be
The larger the moon
The larger the solar system
SC.7.E.6.7
What causes the movement of plates in the lithosphere?
Magnetism from the inner core
Convection Currents from the Mantle
Energy radiated from the Sun
Ocean Currents on the Crust
What unit of distance is most commonly used to measure the vast distances between stars and galaxies?
Kilometers
Light-years
Meters
Astronomical units
What is the primary reason it is difficult for humans to travel to distant stars?
Stars do not have solid surfaces
The technology to travel at the speed of light does not exist
Stars are too hot to approach
Spacecrafts cannot carry enough food for the journey
What is an astronomical unit (AU)?
The distance from Earth to the Sun
The distance from Earth to the Moon
The distance light travels in one year
The average distance between two stars
What is the estimated number of galaxies in the universe?
Thousands
Millions
Billions
Trillions
Approximately how many stars does a galaxy typically contain?
Thousands
Millions
Billions
Trillions
Which one of these claims can be made based on evidence in the graph?
Red super giants have higher temperatures than main sequence stars.
Blue giants have higher temperatures than white dwarfs.
Blue giants have higher temperatures than red super giants.
Main sequence stars have higher temperatures than white dwarfs.
Throughout history different models of the solar system have been used to describe where the sun and planets are in relation to each other. Which statement below best compares the heliocentric model to the geocentric model?
The heliocentric model has the Sun at the center of the solar system, while the geocentric
model does not.
The geocentric model has the Sun at the center of the solar system, while the heliocentric model does not.
The heliocentric model has the elliptical orbits of the solar system, while the geocentric model shows circular orbits.
The geocentric model has the elliptical orbits of the solar system, while the heliocentric model shows circular orbits.
During a lunar eclipse, which object is aligned between the other two?
the sun
the moon
Earth
The position of the Earth, moon and Sun during a lunar eclipse is
sun--moon--Earth
Earth--sun--moon
sun--Earth--moon
moon--sun--Earth
Match the following
Sea breeze
Land Breeze
convection
conduction
Which layer of Earth is located above the outer core?
crust
inner core
mantle
lithosphere
deforestation
loss of forests for other land uses
desertification
deserts expanding from overuse
urbanization
people moving from county to city
rural areas
farms and small towns (country)
sand dunes
hills formed from blowing sand
almost all weather
the ozone layer
coldest layer
hottest layer
meteors burn up
International space station
weather balloons
75% of the mass of the atmosphere
Label the stages
weathering
erosion
deposition
Match the secondary landform to its diagram.
Delta
Sand Dune
Canyon
According to the weather map Dallas will have what type of weather?
(high pressure= happy weather, low pressure= lousy weather)
Sunny Skiles
Rain Showers
Snow Flurries
Clear Skies
A student states that weather is the same as the climate. Which response BEST tells the student the difference between weather and climate?
Weather is the conditions in one day, but climate is the conditions over a long time
Weather is about the wind and the rain, but climate is about the clouds
Weather is measured with tools like thermometers, but climate is measured with tools like forecasts.
Weather is the conditions over a long time, but climate is the conditions in one day
Shorter Waves have ____Energy,Longer Waves___Energy?
Lower,Higher
Higher,Lower
