1st Nine Week Science Exam Review

Which type of bridge is the BEST type to span short distances?

• Toothpick

• Beam

• Suspension

• Truss

What do you need in order to state the VELOCITY of something?

• SPEED and DIRECTION

• MASS and WEIGHT

• SPEED and TIME

• SPEED and SIZE

What is ACCELERATION?

• Matter or the "stuff" objects are made of

• The direction in which an object is traveling

• An educated guess

• a change in an object's speed

The COMBINATION of FORWARD motion and the Earth's GRAVITATIONAL PULL creates_______

• terminal velocity

• air resistance

• acceleration

• orbital motion

The variable being MEASURED in an experiment is called the ___ variable

• independent

• constant

• control

• dependent

What force always OPPOSES motion?

• friction

• unbalanced

• balanced

• accelerating

The UPWARD force on an object falling through the air is _______.

• acceleration

• inertia

• gravity

• air resistance

In order to have a CONTROLLED experiment, you need to have an experimental group and a ____ group.

• dependent

• independent

• variable

• control

What is an example of NEGATIVE ACCELERATION?

• a truck slowing down

• a cat lying in the sun

• a meter racing through space

• a bike in a yard with no movement

Motion is a change in _____.

• position

• acceleration

• force

• speed