A scientist sets out to test his hypothesis using a controlled experiment. He thinks that warmer sand
temperatures during the incubation of turtle eggs produce female hatchlings and cooler sand
temperatures produce males. In the experiment, the scientist will place several turtle eggs in different
temperatures of sand in the same incubator. Once the turtles hatch, he will then count the number of
males and females. What is the independent variable in this controlled experiment?
The gender of the turtles
The type of sand
The temperature of the sand
The number of turtles of each sex
What is the primary difference between a scientific theory and a scientific law?
A theory describes a pattern and a scientific law explains why something happens.
A theory does not have a large body of supporting evidence.
A theory explains why something happens and a law describes a pattern.
Theories and laws can be update when new data arises.
What is the study of atoms and molecules, their structures, and their interactions to form new
substances?
Chemistry
Earth science
Physics
Biology
Which of the following is an example of a scientific theory?
The greater the force applied on an object, the greater the acceleration.
The reason for the distribution of earthquakes and volcanoes on Earth is because of the motion of the
plates.
The total momentum of a system remains constant.
If two objects move closer together, the gravitational pull between them increases.
A train traveling 50 mph slows down when its brakes are applied. What happens to the train?
The direction of the velocity is backward because the train is slowing down.
The direction of the velocity is still forward; however, the direction of acceleration is backward because
the train is slowing down.
The direction of the velocity and the direction of the acceleration are backward because the train is
slowing down.
, The direction of the velocity and the direction of the acceleration are forward. They are just going more
slowly.
Which of the following examples best illustrates Newton's 3rd law?
As an airplane moves, its wings press downward on the air. The air presses upward on the wings, lifting
the plane.
A young child can easily push a small plastic tricycle, but is unable to move a heavy mountain bike.
Riders in an amusement park ride are thrown from side to side in their seats as the car moves around
curves in the track.
A single horse is unable to pull a heavy plow, but several horses pulling together can easily plow a field.
Sound waves are different than light waves because sound waves ___.
can travel through a vacuum
move faster than light waves
are mechanical waves
are always transverse waves
Two vehicles are traveling down a road with the same amount of force being applied to both. One of the
vehicles is an 18-wheeler semi-truck weighing 20 tons. The other vehicle is a VW Beetle weighing about
one ton.
Which of Newton’s laws tells us that the acceleration is smaller in the semi-truck because of its larger
mass?
First Law
Second Law
Third Law
Law of Gravity
A train traveling 50 mph slows down and stops once the brakes are applied. What happens to the
train’s kinetic energy?
The KE changes to the thermal energy of the brakes.
The KE is conserved.
The KE becomes stored in the train’s engine.
The KE is destroyed.
A VW Beetle is traveling north on Main St. at 30 mph. At the same time, a BMW is traveling West on
College Ave at 30 mph. These two cars have …
The same speed and velocity
temperatures during the incubation of turtle eggs produce female hatchlings and cooler sand
temperatures produce males. In the experiment, the scientist will place several turtle eggs in different
temperatures of sand in the same incubator. Once the turtles hatch, he will then count the number of
males and females. What is the independent variable in this controlled experiment?
The gender of the turtles
The type of sand
The temperature of the sand
The number of turtles of each sex
What is the primary difference between a scientific theory and a scientific law?
A theory describes a pattern and a scientific law explains why something happens.
A theory does not have a large body of supporting evidence.
A theory explains why something happens and a law describes a pattern.
Theories and laws can be update when new data arises.
What is the study of atoms and molecules, their structures, and their interactions to form new
substances?
Chemistry
Earth science
Physics
Biology
Which of the following is an example of a scientific theory?
The greater the force applied on an object, the greater the acceleration.
The reason for the distribution of earthquakes and volcanoes on Earth is because of the motion of the
plates.
The total momentum of a system remains constant.
If two objects move closer together, the gravitational pull between them increases.
A train traveling 50 mph slows down when its brakes are applied. What happens to the train?
The direction of the velocity is backward because the train is slowing down.
The direction of the velocity is still forward; however, the direction of acceleration is backward because
the train is slowing down.
The direction of the velocity and the direction of the acceleration are backward because the train is
slowing down.
, The direction of the velocity and the direction of the acceleration are forward. They are just going more
slowly.
Which of the following examples best illustrates Newton's 3rd law?
As an airplane moves, its wings press downward on the air. The air presses upward on the wings, lifting
the plane.
A young child can easily push a small plastic tricycle, but is unable to move a heavy mountain bike.
Riders in an amusement park ride are thrown from side to side in their seats as the car moves around
curves in the track.
A single horse is unable to pull a heavy plow, but several horses pulling together can easily plow a field.
Sound waves are different than light waves because sound waves ___.
can travel through a vacuum
move faster than light waves
are mechanical waves
are always transverse waves
Two vehicles are traveling down a road with the same amount of force being applied to both. One of the
vehicles is an 18-wheeler semi-truck weighing 20 tons. The other vehicle is a VW Beetle weighing about
one ton.
Which of Newton’s laws tells us that the acceleration is smaller in the semi-truck because of its larger
mass?
First Law
Second Law
Third Law
Law of Gravity
A train traveling 50 mph slows down and stops once the brakes are applied. What happens to the
train’s kinetic energy?
The KE changes to the thermal energy of the brakes.
The KE is conserved.
The KE becomes stored in the train’s engine.
The KE is destroyed.
A VW Beetle is traveling north on Main St. at 30 mph. At the same time, a BMW is traveling West on
College Ave at 30 mph. These two cars have …
The same speed and velocity
