Intro to Forces

Multiple Choice

Which of the following best describes the role of friction when you kick a soccer ball on grass?

• It helps the ball move faster.

• It slows the ball down by acting in the opposite direction of motion.

• It pulls the ball towards the ground.

• It makes the ball bounce higher.

Multiple Choice

Which of the following is NOT a way to reduce friction as described in the lesson?

• Adding soap to a slip and slide

• Waxing skis or snowboards

• Using oil on moving parts

• Increasing the roughness of a surface

Multiple Select

Which of the following are examples of contact forces?

• Gravity pulling you down to earth

• Pushing your friend on a swing

• Magnet pulling a paper clip

• Pulling the rope during tug-o-war

Open Ended

What are the three main types of friction, and how does each type occur?

Fill in the Blanks

Balanced forces are equal in size but

in direction.

Multiple Choice

Why does a person weigh less on the moon than on Earth?

• The moon has less mass than Earth, so it has less gravitational pull.

• The moon is farther from the sun.

• The moon spins faster than Earth.

• The moon has more air resistance.

Multiple Choice

Which of the following is an example of a push force?

• Kicking a soccer ball

• Pulling a wagon

• Gravity acting on an apple

• Holding a book still

Multiple Select

Which of the following are ways that forces can help objects?

• Speed up

• Slow down

• Change shape

• Disappear

Fill in the Blanks

We cannot _________ a force, but we can see the _______________ of a force.

Open Ended

How does friction affect the motion of objects, and can you give an example from your own experience where friction played a role?

Multiple Choice

What is the main difference between pushing and pulling an object?

• Pushing moves an object away from the force, while pulling moves it towards the force.

• Pushing and pulling both move objects in the same direction.

• Pushing always requires more force than pulling.

• Pulling only works with heavy objects.

Open Ended

Why is there less gravity on Mars than there is on Earth?