Force, Motion and Energy

A student observes that the craters on the moon are different sizes. The student designs an experiment to study the formation of craters. The materials for the experiment are marbles and a pan of flour. The student makes a hypothesis that the size of the craters made on the surface of the flour will depend on the height from which the marble is dropped. Some of the steps in the student's experiment are described in the picture. Which of these is most likely Step 3 in the student's experiment? (5.6D)

• Drop the same marble from different heights into the pan of flour

• Drop marbles of different masses from the same height into the pan of flour

• Drop marbles of different sizes from different heights into the pan of flour

• Drop a single marble one time into the pan of flour

Tags

NGSS.MS-PS2-2

A polar bear slides down an ice covered hill. As he slides, he slows down. Eventually he comes to a stop. What force acts on an object to slow or stop its motion?

• Speed

• Friction

• Gravity

• Direction

Tags

NGSS.MS-PS2-2

A student drops a ball from shoulder height. The ball bounces 5 times before coming to a stop. What force causes the ball to fall to the ground?

• Friction

• Magnetism

• Position

• Gravity

Tags

NGSS.MS-PS2-4

Looking at the picture, what two tools would be needed to measure the effect of friction on the ball?

• Hand lens and balance

• Balance and spring scale

• Measuring tape and stop watch

• Spring scale and hand lens

Students wrap a copper wire around an iron nail and connect the ends of the wire to the battery. The nail attracts other small nails and paper clips as they stick together. What force is being observed?

• The students are observing the force of gravity.

• The students are observing the force of friction.

• The students are observing the force of magnetism.

• The students are observing the force of electricity.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

The planets orbit the Sun due to the Sun's ___________________.

• movement

• position

• direction

• gravity

Tags

NGSS.MS-PS2-4

NGSS.MS-ESS1-2

When a ball is kicked, ______________ causes the ball to change location.

• position

• movement

• gravity

• friction

Tags

NGSS.MS-PS2-2

The line or path in which an object is moving is its _________________.

• movement

• position

• direction

• force

What is kinetic energy?

• Stored energy.

• The energy of motion.

• Stored in the height of an object.

• The stretching of elastic materials.

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

What forces are acting on an object with a net force of 0 Newtons?

• Unbalanced Forces

• Applied Forces

• Balanced Forces

• Contact Forces