The length of an adult human footprint would be closest to 20 --
millimeters
centimeters
meters
dekameters
Which of these should be used to accurately measure 250 mL of water?
Students want to find out if an empty can rolls down a ramp faster than a can filled with sand. Which of these would be the fairest way to find out?
5
15
20
25
3 mL
11 mL
14 mL
25 mL
faster the candle melted
longer the candle burned
brighter the candle's flame
higher the candle's glame
1 kilometer
4 centimeters
3 meters
10 millimeters
Objects with greater inertia are more difficult to move than those with less inertia. Which object has the greatest inertia?
A bicycle
A school bus
A rowboat
A basketball
Which of these inclined planes would be most efficient to use to move an object upward?
Copper is called a good conductor because it can carry --
water
electricity
air
natural gas
Dragging your feet across a rug and then touching a doorknob and getting shocked is a result of --
static electricity
magnetism
current electricity
resistance
Which of these is caused by static electricity?
Water flowing very fast through a small tube
Hair sticking to a comb on a cold, dry day
Wilting of plant leaves in the summertime
Light shining from a flashlight
Which of these shows one complete wavelength?
A
B
C
D
Thomas Edison used electricity in many of his inventions. Which of these was one of his inventions?
The electric can opener
The electric light bulb
The telephone
The electron microscope
All elements are made up of --
atoms
compounds
mixtures
solutions
Which of these is being changed from a solid to a liquid?
Which plant part will become a new plant?
Which gas is used by plants during photosynthesis?
Oxygen
Nitrogen
Carbon dioxide
Natural gas
Which of these is the source of energy for photosynthesis?
Electricity
Magnetism
Sunlight
Gravity
Which of these is most important for helping an animal move through soft sand or snow?
Short thin legs
A long bushy tail
A long neck
Big wide feet
Owls
Snakes
Rabbits
Hawks
The box
The light
The wheelbarrow
The water hose
Which of these belongs to the kingdom Protista?
4
8
16
24
Which of these has a backbone, skull, and ribs?
Which of these are found only in vertebrates
Blood
Backbones
Shells
Fur
Cirrus
Cumulus
Stratus
Nimbostratus
Changes in the pressure of the air can be measured by --
barometers
thermometers
weather vanes
anemometers
The sun heats the Earth unevenly, making the poles cold and the tropics hot, because --
the tropics face more directly toward the sun
the poles are covered with ice which causes cold air
seasons change
weather changes
Which of these is the biggest?
The moon
The Earth
The sun
Jupiter
The Earth, the other planets, and the sun are all a part of the solar system. How is the sun different from other parts of the solar system?
It is smaller than most of the planets in the solar system.
It is farther from the solar system than the planets.
It is producing most of the heat and light in the solar system.
It is made up of elements that cannot be found on the planets.
Why is coal an important resource in Virginia?
It is a source of steel.
It is an energy source.
It is a basic building material.
It is ground into fertilizer.
A
B
C
D
eat more zooplankton
have to reproduce faster
finally die
be smaller
Weathering
Erosion
Earthquakes
Volcanoes
Wind
Running water
Volcanoes
Flowing ice
Swordfish
Hammerhead shark
Leopard shark
Nurse shark
The jellyfish is an invertebrate because it lacks --
eyes
bones
blood
cells
Which roller coaster will not have enough kinetic energy at the bottom of the first hill to carry the car over the second hill?
Benjamin Franklin discovered the form of energy produced by lightning. Experiments with lightning killed many people before he discovered that lightning is a form of --
gravity
water
magnetism
electricity
Which of these fish has a mouth shape that best allows it to find food hidden in the cracks of rocks and coral?
A, B, C, D
D, B, C, A
B, C, D, A
C, D, B, A
Oxygen, nitrogen, and carbon dioxide may be grouped together because at room temperature they are all a --
solid
liquid
gas
colloid
The moon revolves around --
itself
the Earth
the sun
the solar system
Which of these is a process that allows plants to convert light energy into food energy?
Reproduction
Excretion
Digestion
Photosynthesis
A niche
A community
An ecosystem
A biome
Amherst
Madison
King William
Littleton
D, B, C, A
D, C, B, A
A, D, C, B
C, B, D, A
Which of these will happen if the temperature of a metal pan is increased?
The pan will begin to lose heat.
The molecules of the pan will move faster.
The metal will change into another metal.
The pan will contract.
Sound waves travel best through --
gases
liquids
solids
vacuums
0.1 km
0.5 km
1 km
1.5 km
Which of these belong to the kingdom Monera?
Ferns
Mosses
Mushrooms
Bacteria
The salinity of the Mediterranean Sea is greater than that of the Atlantic Ocean. This means that, compared to the Atlantic Ocean, the Mediterranean Sea is --
wider
deeper
saltier
cooler
1 millimeter
2 kilometers
4 meters
10 centimeters
2 kg
3 kg
5 kg
7 kg
Tornadoes are most likely to be produced from which type of cloud?
Cirrus
Stratus
Cumulus
Cumulonimbus
Which of these is needed to measure the mass of a rock?
An anemometer
A barometer
A balance
A metric ruler
A
B
C
D
The internal parts of a cell are suspended in a jelly-like liquid called the --
nucleus
cell membrane
cytoplasm
chloroplasts
Which surface feature is most likely caused by the movement of the Earth's crustal plates?
Canyons
Deltas
Lakes
Volcanoes
A periscope works by using the reflection of mirrors. Tama made several periscopes for watching baby birds in a nest. Which periscope will work?
North
East
South
West
Which of these can most easily produce magnetic fields?
Sunlight
Wind
Electricity
Flowing water
The substance that makes plants green is known as --
water
calcium
chlorophyll
carbon dioxide
Which instrument could tell you that conditions are right for flying a kite?
Anemometer
Barometer
Hygrometer
Thermometer
Today, which human activity is responsible for endangering the greatest number of land animal species?
Hunting for food and for sport
Destruction of habitats
Accidental starting of forest fires
Cutting wildflowers in national parks
The height of each of the graduated cylinders
The time it takes for each marble to hit bottom
The size and mass of each of the marbles
The volume of each of the liquids in the cylinders
Which picture shows the book with the most potential energy?
Which of these units would be best to use to measure the amount of water in a test tube?
Milliliters
Meters
Kilograms
Seconds
A large rock and a long, thick board could be used to construct which simple machine?
Screw
Pulley
Wheel and axle
Lever
The stamen
The pistil
The sepals
The petals
Electric lights will not come on unless their electrical circuit is a --
parallel circuit
series circuit
closed circuit
short circuit
Rocks which formed in areas once covered by oceans often contain fossils of animals which lived in the sea. Which one of these rocks contains fossils of ocean animals?
Which factor is usually recorded when gathering weather data?
Number of gases in the air
Temperature of the air
Type of gases in the air
Amount of air in an area
Sunflower seeds and cracked corn
Cracked corn and millet
Millet and safflower seeds
Sunflower and safflower seeds
1 liter
5 liters
10 liters
15 liters
The capacity of an automobile gasoline tank would most likely be measured in --
A
B
C
D
Cell wall
Cell membrane
Vacuole
Nucleus
There were many blooms on the roses near the house and fewer blooms on the roses closest to the street.
The roses closest to the street had more blooms because they received more sunlight.
The roses near the house were taller but had fewer blooms.
The roses close to the house had fewer blooms and leaves.
Which of the following materials is transparent?
Clear window glass
Your eyelids
Solid wood door
White paper
An inclined plane and a pulley
A wheel and axle and a wedge
Gears and a lever
A wheel and axle and a lever
The two structures that most plants use to gather nutrients and energy to live are --
roots and leaves
roots and flowers
stems and roots
stems and leaves
Students must conduct an experiment in which they find out how long a rubber ball bounces before it comes to a stop. Which unit would be best for recording this information?
Gram
Degrees Celsius
Meter
Second
The smallest quantity of an element is --
a compound
an atom
a solution
a molecule
Which is these is the fairest way to find out if sand or silt will settle faster when mixed with water?
2-3 kilograms
4-5 kilograms
6-7 kilograms
8-9 kilograms
The process an insect undergoes when changing from larva to adult is known as --
respiration
metamorphosis
photosynthesis
reproduction
Ocean waves
The sun
Whales
Salt
The most common cause of earthquakes is --
the sinking of the ocean floor
movements in the Earth's crust
giant tidal waves called tsunamis
unequal heating of the atmosphere
Which diagram shows a wave with the highest frequency?
The most important reason that lakes and oceans have different types of animal life is that oceans have --
sandy shores and bottoms
water with more salt
large waves at the edges
a much larger surface area
changes in temperature
the amount of rainfall
changes in humidity
the speed of the wind
Which of the following plants is an example of a nonvascular plant?
The rotation of the Earth on its axis causes --
seasons
years
months
days
To the blue crab, the open bay of the Chesapeake Bay region is its --
niche
habitat
community
population
To learn about the temperature inside the Earth's crust, scientists study --
earthquakes
fossil formations
minerals on the ocean floor
volcanoes
Todd observes that his strawberry plant has grown little green strawberries. Which of these is a prediction Todd might make about his strawberry plant?
The green berries will ripen into red berries.
The strawberry plant is growing under an oak tree.
The strawberry plant doesn't have enough water.
The green berries are a new type of strawberry.
Certain storms form over water near the equator, usually between the months of June and November. Warm, moist air rises quickly over the ocean, causing a strong, whirling storm with high winds and heavy rains. This type of storm is known as a --
tornado
hurricane
blizzard
sandstorm
Maple
Dandelion
Milkweed
Cocklebur
Which material will sound travel through the fastest?
Water
Air
Steel
Cloth
Morse code
Radio
Sonar
Sound tracking
Which of the following is an invertebrate?
A bar magnet is placed on a table, and a sheet of blank paper is placed over the magnet. What could be sprinkled on the paper to show the magnetic field of the bar magnet?
Salt
Iron filings
Sand
Soil
10 cm
12 cm
14 cm
16 cm
Which one of the following events occurs in the formation of sedimentary rock?
Crystallization
Melting
Cooling
Weathering
Bright and unusual fish markings can warn other fish to stay away. Which of these fish probably is the most dangerous to its predators?
When a coin is dropped, it falls to the ground. As the coin falls, it loses potential energy and gains what kind of energy?
Kinetic
Chemical
Electrical
Solar
2.8 cm
3.1 cm
3.5 cm
4.0 cm
The American dogwood is a member of which kingdom of living things?
Monera
Animal
Protist
Plant
Rubber ball, plastic comb, nail
Paper clip, penny, screw
Cork, dollar bill, tweezers
Pencil, eraser, spoon
C, A, B, D
B, A, C, D
A, D, B, C
D, A, B, C
Which of the following instruments is used to measure mass?
When light hits an object, the rays can pass through it, bounce off it, or be absorbed by it. Light rays that bounce back are --
radiant
reflected
refracted
radar
Mechanical
Electrical
Chemical
Nuclear
Which of these increases as a submarine dives deeper into the ocean?
The number of plants in the water
The freshness of the water
The water temperature
The water pressure
Which of the following changes is possible with the addition of heat?
Liquid water changes to ice.
Water vapor changes to ice.
Water vapor changes to liquid water.
Ice changes to liquid water.
The time between today's sunrise and tomorrow's sunrise would be about --
12 hours
24 hours
36 hours
48 hours
1
2
4
5
laying eggs
eating
resting
growing wings
Geologists learn what organisms were like in the past by studying --
minerals
water
fossils
atmosphere
high tides
wind
human activity
running water
Wave #1
Wave #2
Wave #3
Wave #4
show a heavy drop
be a flat line even with 1995
have topped 250 million
continue its steady rise
dry
stormy
fair
foggy
A strip of land is cleared of trees and bushes to make space for a power line. What impact might this have on birds living in the area?
The natural enemies of birds will be eliminated.
Weather conditions may change.
The rate of erosion will decrease.
There will be less food and shelter.
Two students wanted to find out which of their toy race cars would go the farthest. They let each car roll down a ramp and then measured how far the cars rolled. Which of these should be held constant if they want a fair test of their cars?
The height of the ramp
The weight of the ramp
The length of the cars
The shape of the cars
A person will see a flash of lightning before they hear the thunder that goes with it because --
the eye is quicker than the ear
the thunder occurs much later than the lightning
sound travels faster through the atmosphere than light
light travels faster through the atmosphere than sound
What material would be safest to use as an insulator to cover electrical wires?
Aluminum
Tin
Rubber
Water
30 milliliters
27 milliliters
37 milliliters
35 milliliters
A Virginia natural resource important to the state's economy, as well as a primary source of energy, is --
oil
steel
coal
limestone
Monera
Protista
Fungi
Plantae
a movement of air molecules
a magnetic field
an electrical discharge
a glowing chemical
Making seeds
Producing pollen
Absorbing nutrients
Storing chlorophyll
on the abyssal plain
in the oceanic trench
above the continental shelf
beside the continental slope
In plant cells, chloroplasts --
act as the cell's control center
enable plant cells to produce their own food
allow materials to move into and out of the cell
support and protect the cell
Which of these Earth layers is the thinnest?
The inner core
The outer core
The mantle
The crust
What do ferns have that apple trees do not have?
Stems
Roots
Flowers
Spores
5 days
8 days
13 days
16 days
Redwood trees can grow to be very tall. They can grow so tall because they are --
vascular
deciduous
nonvascular
flowering
Which of the following sea animals would be classified as an invertebrate?
Sea horse
Squid
Shark
Seal
The moon is circular.
The moon spins on its axis.
The moon is solid rock.
The moon has little air.
The distance between which of these is the shortest?
Earth and sun
Moon and sun
Earth and Mars
Earth and moon
By passing white light through a prism, you can tell--
that white light is actually a mixture of different colors
the mass of the prism
the original source of the light
that blue light is brighter than white light
Magnetic forces
Chemical reactions
Static Electricity
Heat differences
Which of the following would be useful in locating a sunken ship at the bottom of the ocean?
Sonar
Lasers
Morse code
Telescope
stay warm
locate nectar-filled flowers
fly away quickly
frighten or confuse enemies
Woznat
Zapoom
Nanner
Ock
The smallest part of matter that is identifiable as an element is the --
atom
molecule
cell
compound
Which item below would have a mass closest to that of a thumbtack?
millimeters
centimeters
decimeters
meters
The Earth is very different from other planets in the solar system because it has the most --
solid rock
volcanoes
liquid water
high winds
Which of these natural resources is a source of lumber for home building?