Force and Motion Lesson 2 MGH pg.184-187

​Investigating Forces

5.7B

​Lets Read pg.184

Multiple Choice

What is a system?

• A single object that moves

• A group of parts that work together

• A force that causes motion

• A tool used in experiments

Multiple Choice

What is an interaction in a system?

• A prediction that can be tested

• A force that pulls objects down

• Contact through touch or actions

• A change in temperature

Multiple Choice

Why can two children of equal weight balance a seesaw?

• They are not applying any force

• The downward forces balance each other out

• One child is stronger than the other

• The seesaw is broken

​Testing Variables

5.7B

​Lets Read pg.186

Multiple Choice

How do you find out if a hypothesis is correct?

• By guessing

• By asking a friend

• By performing a test

• By reading a book

Multiple Choice

What surface allows a puck to slide farther?

• Pavement

• Ice

• Grass

• Carpet

Multiple Choice

What variable affects how high a ball bounces?

• The size of the ball

• The strength of the downward force

• The color of the ball

• The surface it lands on

​Your Turn...
Show What you Know
STRATEGIES!

Multiple Choice

Observe the illustration.

In the illustration, Ray places a car at the top of a ramp. There is carpet at the bottom of one side of the ramp and tile at the bottom of the other side of the ramp. He measures how far the car travels before stopping.

What is Ray testing in his investigation?

• weight

• gravity

• friction

• speed

Multiple Choice

How do the properties of a ramp affect the force on a car on the ramp?

• The steeper (taller) the ramp is, the greater the force of friction on the car is.

• The longer the ramp is, the greater the force of gravity on the car is.

• The steeper (taller) the ramp is, the greater the force of gravity on the car is.

• The longer the ramp is, the greater the force of friction on the car is.

Multiple Choice

Observe the illustration.

In the illustration, a pulley is holding a 6 kg watermelon. Which object will lift the watermelon to the top of the pulley when added to the second basket?

• bowling ball, 7 kg

• brick, 3 kg

• barbell, 5 kg

• pineapple, 1 kg