Which of these is an important natural resource of the Chesapeake Bay?
The Apollo 11 mission was able to retrieve samples of the Moon’s surface because it was the first mission to have astronauts —
land on the Moon
orbit a planet
return to Earth
walk in space
When ice cream is left out of a freezer, the ice cream changes from a —
solid to a gas
gas to a liquid
solid to a liquid
liquid to a gas
Students want to learn which of two soils holds more water. They put clay in one bottle and sand in the other. Then they put equal amounts of water in the bottles. Some of the water drained into beakers. Which of these is the manipulated, independent variable?
Type of soil
Type of beaker
Amount of water
Number of bottles
Which of these correctly shows what happens when two magnets are placed side by side?
Students place a pencil in a glass of water as shown. The pencil in the water looks broken because —
water can dissolve pencils
water is colder than air
light bends when it enters the water
light is absorbed when it hits the glass
Which of these best describes the Moon?
Older than Earth
Smaller than Earth
Having the same climate as Earth
Having the same atmosphere as Earth
A student is writing a report on recycling. The student learns that different kinds of material are recycled in different amounts. Which graph best shows the data?
A student is hiking through a forest taking pictures for science class. Which picture would most likely be used as an example of human impact on Earth?
A trail built by cutting down trees
A river eroding away the riverbank
A bird nest made of dead branches
A group of butterflies landing on flowers
Which structure surrounds and protects an animal cell?
Nucleus
Vacuole
Cytoplasm
Cell membrane
What kind of energy do all moving objects have?
Light energy
Solar energy
Kinetic energy
Renewable energy
The electrician in this picture is wearing rubber gloves for protection. The purpose of the rubber gloves is to —
keep the electrician dry
create an electrical circuit
produce electricity
insulate the electrician
The top layers of soil are important because they —
prevent earthquakes
give plants nutrients
protect the bedrock
make walking easier
Based on the food web, which of these is a producer?
Eagle
Grass
Rabbit
Sparrow
Which of these correctly shows how light acts when it hits a mirror?
In winter, the arctic fox has white fur. In summer, its fur changes color to brown and gray. The change in fur color helps the arctic fox to —
run
mate
hide
hibernate
A student makes a fruit drink by stirring a powdered mix into cold water. Why is the fruit drink a solution?
The powder dissolves in the water.
The water changes color.
The student stirs the water.
The water is the proper temperature.
Which unit is best to use for measuring the width of oak tree leaves?
Centimeter
Gram
Kilometer
Milliliter
At which location are oceans the deepest?
Mid-ocean ridge
Abyssal plain
Ocean trench
Volcanic island
Which of these is most likely harmful to an ecosystem?
Building new homes in a wetland
Taking away airplanes from an airport
Planting trees in an orchard
Adding floors to an office building
Which of these describes rotation?
Mercury goes around the Sun every 88 days.
The Moon goes around Earth every 28 days.
Earth orbits the Sun about every 365 days.
Earth makes one turn on its axis every 24 hours.
When a tree is dormant, the tree is
dying
inactive
growing taller
growing its leaves
Which type of storm causes the most flooding in areas located near an ocean coastline?
Tornado
Hurricane
Blizzard
Freezing rain
Granite is a hard material and forms from cooling magma. Granite is a type of —
A lava stone
igneous rock
volcanic dust
sedimentary rock
What do the arrows on the map represent?
Size of waves
Water density
Ocean currents
Time between tides
A student rolls a ball on the ground. Which of these causes the ball to slow down and then stop?
The motion of the ball
The speed of the ball
Friction from the ground
A magnetic field
Which of the following do plants need to make their own food?
Flowers
Bacteria
Sunlight
Oxygen
A student counted the number of Canada geese that have lived on a pond for the past five years. Based on the graph, how many geese will probably live on the pond in year 6?
60
65
70
75
Which of these objects is translucent?
A student’s notebook
A mirror on the bus
A brick wall of the school
A student’s sunglass lenses
The presence of an animal fossil in a rock gives evidence of —
what hunting behaviors the animal used
how many babies the animal had
exactly when the animal was born
the time period the animal lived in
A boy placed four leaves in a caterpillar’s cage.
He observed the number of leaves in the caterpillar’s cage each day. Based on the data, the boy should infer that the caterpillar —
is eating only every other day
is eating each day
will eat part of one leaf next Monday
will stop eating during molting on Friday
What tool is used to determine the mass of an object?
Balance
Meter stick
Thermometer
Graduated cylinder
Which part of a sunflower plant absorbs water and nutrients?
Roots
Stems
Leaves
Flowers
Juan is doing an experiment to see how long it takes an acorn to grow into a 0.5-meter-tall oak tree. Which two instruments should he choose?
Thermometer and centimeter ruler
Thermometer and calendar
Centimeter ruler and pan balance
Centimeter ruler and calendar
An electric motor is designed to turn electrical energy into —
solar energy
potential energy
static electricity
mechanical energy
A group of students tested the effects of different amounts of water on ivy plant growth. Afterwards, they could not remember how much each plant grew per day. What should they have done to practice good science?
Discuss their observations with other groups in their class.
Conduct the experiment with more than one type of plant.
Record daily information in a data table.
Make up explanations for the results.
In which numbered stage of the frog’s life cycle does the frog begin to use lungs to breathe air?
1
2
3
4
Lee uses a microscope during science class. He sees this organism in a drop of water. Which organism did he most likely see?