Worksheets7th Grade Trimester 1 Review
Total questions: 50
Worksheet time: 25mins
True or false: there are variations in the amount of light produced by the sun in a given day
true
false
True or false: we use our gut to determine if a scientific claim is true.
true
false
You are doing an experiment to determine the effect of mass on the speed of a dropped object. What equipment will you need for this experiment?
Graduated cylinder
Anemometer
Mass balance
Thermometer
A student measures the time it takes for a sheet of paper to fall to the ground from a marked height. The student then crumples the same piece of paper and drops the paper from the same height. The student observes that the paper fell faster the second time. What was the dependent variable?
the shape of the paper
the height of the drop
the time it takes for the paper to fall
the speed at which the paper fell
Clara rolls a ball down a ramp and measures the time it takes for the ball to reach the bottom of the ramp. She then changes the angle of the ramp three times. What is the independent variable in Clara's experiment?
The mass of the ball
The angle of the ramp
The time it takes the ball to reach the bottom of the ramp
The speed of the ball
Clara rolls a ball down a ramp and measures the time it takes for the ball to reach the bottom of the ramp. She then changes the angle of the ramp three times. What question is Clara investigating?
How does the mass of the ball affect the ball's speed down the ramp?
How does the size of the ball affect the time it takes to roll down the ramp?
How does the angle of the ramp affect the time it takes the ball to roll down the ramp?
How does the time it take to roll down the ramp affect the angle of the ramp?
Clara continues her experiment, using her apple watch to time the ball for the first 3 trials. she records this data in a data table. For the fourth trial, she uses the stopwatch on her phone and records the time in her data table. What was Clara's mistake?
Data should not be recorded directly in a data table
She measured time using two different methods
She conducted the experiment herself
She changed the mass of the ball
You measure the mass of the ball and find the number value is 15. What is the correct way to record this value?
15
grams
grams = 15
15 g
Why was the International System of Units (SI) developed?
It was developed to compete with the English Standard System of Units.
It was developed to allow countries to follow their own systems of measurement.
It was developed to help scientists keep their data, observations, and measurements secret from other scientists.
It was developed to help scientists compare measurements made by different people in different locations using different tools.
What is the best tool to track a hurricane?
Computer
Electron Microscope
Magnetic Resonance Imaging
Hand Lens
When recording data from experiments you can use any units you want as long as you write them down.
True
False
Which gives the tool that scientists would most likely use to find the precise position of objects and the units in which position is measured?
stopwatch; seconds and minutes
metric ruler; centimeters and millimeters
triple beam balance; grams and milligrams
Global Positioning System (GPS); longitude and latitude
Which statement best describes science?
a collection of knowledge about Earth
a list of facts that all scientists agree are true
a systematic study of natural events and conditions
a complete explanation of everything that happens in the universe
After making observations, what is the next thing you should do in a scientific study?
Write an article for a scientific journal.
Propose a testable explanation.
Draw a conclusion.
Analyze your results.
All of the following products are the result of using the engineering design process. Which product was engineered to address needs of a person who has lost a body part such as an arm or a leg?
lasers
prosthetics
steam engine
voice-recording devices
On a cold morning, Pierre observed that the grass looked wet. Which term best describes what Pierre observed?
Dew
Water Vapor
Ice
Clouds
On a cold morning, Pierre observed that the grass looked wet. Which process occurred when the water droplets formed on the grass?
Evaporation
Condensation
Sublimation
Freezing
Rank the distribution from greatest to least on Earth
Saltwater, land, freshwater
Land, freshwater, saltwater
Freshwater, saltwater, land
Land, saltwater, freshwater
Cohesion means most accurately
Molecules that stick to different molecules
Molecules that stick to paper only
Molecules that stick to water only
Molecules that stick to themselves
A water molecule contains two hydrogen atoms and one oxygen atom. Which of the following statements about water molecules is true?
All of the atoms have a positive charge
All of the atoms have a negative charge
The oxygen atom is positively charged and the hydrogen atoms are negatively charged
The oxygen atom is negatively charged and the hydrogen atoms are positively charged
Ice is more dense than liquid water
True
False
Precipitation is
Snow
Hail
Rain
All of these
Tai grows plants in a container called a terrarium, as shown below. He keeps the terrarium on a sunny windowsill. The terrarium is closed, so Tai cannot add water to the plants. However, the plants have enough water to grow. Which of these statements best explains why the plants always have enough water?
The air cannot hold all of the water vapor
Water is unable to evaporate from the soil
The plants take up water and store it in their stems and leaves
Energy from the sun cycles water through the soil, the plants, and the air
How does water from plants' leaves enter the water cycle?
Evaporation
Condensation
Transpiration
Freezing
Within which type of water body does water move the slowest?
River
Ocean
Cloud
Groundwater
Water is a good solvent. Which of these can be dissolved in water?
Rocks
Sand
Pebbles
Minerals
Which has the highest porosity?
Sheet of paper
Sponge
A rock made of granite
A rock made of linestone
Which has the highest permeability?
A piece of fabric
A whiteboard
A sheet of plastic
A piece of wood
Which of the following characteristics of a watershed would act to reduce erosion?
large floodplain areas
soil with a high porosity
a large number of lakes
channels with a low gradient
Which would be most appropriate measure of a stream's discharge?
10 L/s
10 m/s
10 mph
10 m/s
Which three factors most directly affect surface currents in the oceans?
upwelling, convection, and the sun’s energy
deep currents, convection currents, and surface winds
dissolved solids, dissolved gases, and the sun’s energy
surface winds, the Coriolis effect, and continental deflection
What is convection current?
the curving of the path of a moving object from an otherwise straight path due to Earth’s rotation
currents that happen at or near the Earth's surface
movement of water that results from density differences
What is upwelling?
currents that occur deep in the ocean
the curving of the path of a moving object from an otherwise straight path due to Earth’s rotation
the movement of deep, cold, nutrient-rich water to the surface.
Water increasing in density and rising to the surface
Define urbanization
the process by which large numbers of people become permanently concentrated in relatively small areas, forming cities.
the process by which large numbers of people become permanently concentrated in relatively large areas, forming farms.
the process by which large number of people move out of a city
the process by which a large number of people move to outer space
One measure of water quality is the cloudiness of the water. Which of these terms describes this measure?
Turbidity
Temperature
Cloudiness
pH
In this layer of the atmosphere, pressure decreases
Troposphere
Stratosphere
Mesosphere
Thermosphere
In this layer of the atmosphere, temperature decreases
Troposphere
Stratosphere
Mesosphere
Thermosphere
This layer of the atmosphere contains the ozone layer
Troposphere
Stratosphere
Mesosphere
Thermosphere
A majority of Earth's air is contained in this layer
Troposphere
Stratosphere
Mesosphere
Thermosphere
This is the most common gas on Earth.
Nitrogen
Oxygen
Carbon Dioxide
Carbon
True or false: Without the ozone layer the Earth would see increased UV radiation from the sun.
True
False
Which has the most thermal energy if both items are at the same temperature?
A spoon of tea
A cup of tea
True or false: heat moves from cold to hot.
True
False
Describes how heat is transferred through contact, or touch.
Conduction
Convection
Radiation
Induction
A fluid is warmed and its density decreases, causing the fluid to rise.
Conduction
Convection
Radiation
Induction
Transfer of heat through electromagnetic waves.
Conduction
Convection
Radiation
Induction
True or false: although we can't see them, atoms are always moving.
True
False
Atoms that are moving have kinetic energy.
True
False
All atoms in a substance are moving at the same speed.
True
False
During the day, the portions of Earth’s surface that receive sunlight absorb energy in the form of heat. During the night, Earth’s surface radiates this energy back into space. What is the main form of radiation released by Earth at night?
visible light
gamma rays
infrared radiation
ultraviolet radiation
