Third Periodical Test in SCIENCE 4

What does a rigid object generally resist in the context of force?

• changing shape

• changing color

• changing temperature

• changing direction

What happens to a soft object when force is applied to it?

• It remains unchanged.

• It changes color.

• It changes its shape.

• It becomes invisible.

Which of the following tools can be used to measure the distance and time when objects move accurately?

• a stopwatch and a measuring tape

• a thermometer and a ruler

• a balance scale and a protractor

• a barometer and a compass

Which tool is best suited to measure the distance traveled by a moving object precisely?

• calculator

• clock

• meter stick

• stopwatch

Which tool is most suitable for measuring the length of a small object or short distance?

• ruler

• stopwatch

• thermometer

• compass

What is speed?

• a vector quantity

• one that represents distance

• an aspect that is measured in inches

• measure of how fast an object moves

What are the two measurements needed to determine speed?

• length and height

• time and distance

• initial force and opposite force

• bending forces and magnetic forces

Kath walks to the canteen that is 10 meters (m) away from her classroom for 10 seconds (s). What is her speed?

• 1 m/s

• 2 m/s

• 5 m/s

• 10 m/s

What happens when force is applied against or opposite an object's motion?

• It speeds up the motion.

• It slows down the motion

• It stops the motion

• It changes the object's shape

What happens when a force is applied in the same direction as the moving object?

• It speeds up the object's motion.

• It changes the object's shape.

• It slows down the object's motion.

• It changes the object's color.