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?