The tool shown above is an example of a
compound machine made of two
Because it reduces the force needed to lift a
load of bricks, a wheelbarrow is MOST like
which of the following simple machines?
Which of these would decrease the force
needed to lift the load?
Ken wants to move a large bolder in his
back yard. He has another large rock and
piece of wood to work with. Which
arrangement will be most efficient to move
the rock?
Many common objects are simple machines
or combinations of simple machines. Which
of the following machines use a pulley
system
Which of the following is an example of a
first class lever?
A sheet of notebook paper lying motionless
on a table and not touched by an outside
force will MOST likely remain motionless
because
A book is sliding across a horizontal
tabletop and is slowing down. Which of the
following statements is accurate about this
situation?
When a satellite is in orbit around the Earth,
the force of gravity on the shuttle
To show students that gravity alone is not
the only force that helps move food through
the body, the teacher does a headstand and
eats a cookie. Which of the following is
MOST responsible for moving the food to
the teacher's stomach while upside down?
Which type of energy transformation is
occurring in the diagram shown above?
The equation above describes the chemical
reaction that occurs during photosynthesis.
What happens to the light energy that is
shown in the reaction?
Which organism in the food chain shown
above is responsible for transforming
radiant energy into chemical energy?
In which part of this diagram is radiant
energy from the sun being converted into
chemical energy?
Which of these types of plants would
MOST LIKELY have the highest rate of
photosynthesis?
What process in the natural world converts
radiant energy into chemical energy?
During photosynthesis,
According to the diagram above, during
what months does Australia have the
MOST hours of daylight?
In Melbourne, Australia, the average daily
high temperature in January is about 26 °C.
In July, the average is about 13 °C.
According to the diagram above, this
seasonal difference is due to a change in the
On the map below, shaded areas show
where it is night on Earth. Unshaded areas
show where it is daytime.
Use what you know about the length of
daylight and nighttime hours in different
seasons to determine which season it is in
the Northern Hemisphere?
On the map below, shaded areas show
where it is night on Earth. Unshaded areas
show where it is daytime.
Which of these BEST explains why it is
night in more of the Northern Hemisphere
than in the Southern Hemisphere?
At which position on the diagram above
does the waning gibbous phase of the moon
occur?
At which position on the diagram above
does the waxing gibbous phase of the moon
occur?
What is the phase of the moon indicated by
the 1 in the diagram shown above?
Which of the following shows how the
moon appears to be by an observer on
Earth, when it is in the position shown in
the diagram above?
The tables show some of the species living
in two nearby lakes at two different times.
The change in the species of each lake is
MOST LIKELY the result of
A landslide carries many tons of rock from
a hillside into a valley. All of the plants in
the valley are buried. New plants that begin
to grow in the valley after the landslide will
MOST LIKELY lack
The rocks in the diagram have been
exposed to weathering and erosion to form
the patterns seen above. Why does this
pattern result?
Limestone is dissolved by groundwater.
Over time, which type of landform is
MOST LIKELY formed from this process?
The table below shows part of the crop
rotation schedule used by George
Washington, the first President of the
United States of America.
Rotation of crops helped ensure the longterm
productivity of George Washington's
farm because each crop MOST likely
A volcanic eruption adds, among other
things, a large amount of lava to the
environment. This balances which of the
following forces?
After a large volcanic eruption, it may take
many years for the ecosystem surrounding
the volcano to return to the equilibrium that
existed before the eruption. Which of these
is a natural process that directly works to
return ecosystems to their equilibrium?