Checkpoint 3 Review

Which of the following best illustrates an application of Newton’s First Law (also called the Law of Inertia)?

• A passenger not wearing a seatbelt is ejected from an automobile during a severe crash.

• Dinner plates remain on a table when a slick tablecloth is pulled out from underneath them.

• An ice hockey puck continues sliding across the relatively frictionless ice until it comes into contact with a wall or a player’s stick.

• All of these are examples of Newton's First Law.

Complete the sentence below. When a bicycle suddenly stops, the objects in the basket are thrown forward. This is explained by (a)   .

Word bank: friction, gravity, inertia

The picture below shows a hot air balloon in flight. Which type of heat transfer plays the largest role in the changing height of the hot air balloon in the sky?

• Convection, because as the heat from the flame is increased, less dense air fills and lifts the balloon

• Conduction, because as the heat from the flame is increased, heat can move into the balloon without traveling through particles

• Condensation, because as the heat from the flame is decreased, water droplets form on the sides of the balloon, making it heavier

• Radiation, because as the heat from the flame is decreased, the flow of energy is able to pull the balloon down

Determine the type of thermal energy transfer based on the scenario. conduction, convection, or radiation

Scenario: A pot heats up on the grill.

(a)  

Determine the type of thermal energy transfer based on the scenario. conduction, convection, or radiation

Scenario: My soup boils in a pot.

(a)  

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Determine the type of thermal energy transfer based on the scenario. conduction, convection, or radiation

Scenario: My cat, Jimmy, lies on the grass to feel the sun's warmth.

(a)  

Determine the type of thermal energy transfer based on the scenario. conduction, convection, or radiation

Scenario: Warm air moves up while cooler air moves down.

• convection
• conduction

• condensation

• radiation

Determine the type of thermal energy transfer based on the scenario. conduction, convection, or radiation

Scenario: A stirrer warms up in warm tea.

(a)  

Determine the type of thermal energy transfer based on the scenario. conduction, convection, or radiation

Scenario: Malina warms their hands in front of a fire.

(a)  

Using the data table, which of the following best explains the relationship between the flow of thermal energy to the temperature of the lemonade and surrounding air?

• Condensed water vapor from the air formed around the rim of the cup, which then transferred thermal energy into the tea.

• The thermal energy of the cool kitchen moved from the room into the lemonade.

• The thermal energy of the lemonade moved from inside the cup to the surrounding air.

• Evaporation of the lemonade resulted in less lemonade in the cup, which decreased the amount of thermal energy in the cup.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5