Friction

Haley is standing outside in the cold weather waiting for her bus. How can she create heat with her hands?

• Wave her hands in the air

• Rub her hands together

• Cover her hands in a towel

• Wash her hands with water

Tags

NGSS.4-PS3-2

Two objects will create some heat if what is true?

• The objects are far apart.

• . The objects are both very heavy.

• The objects are made of different mate

• The objects rub against each other

Right after a nail is pulled from a piece of wood, it feels hot. What makes the heat?

• The wood rubs against the nail

• The nail is made of iron, a kind of metal.

• The nail was heated by the air around it.

• The wood is made from a tree, a living thing.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Wesley is bored during class and begins rubbing his pencil eraser on the desk. He notices he created energy. What kind of energy can be created by rubbing an eraser on a desk?

• electric energy

• heat energy

• light energy

• magnetic energy

Tags

NGSS.MS-PS3-5

Micah is riding his bike. He stops quickly and notices the tires feel very hot. Why are the tires hot?

• They are filled with ai

• They moved in a circle.

• They are very smooth.

• They rubbed against the road.

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Which of these actions would most likely make the most heat?

• Dragging a heavy box across the floor

• Letting ice cubes melt on a plate

• Growing plants in a sunny window

• Pouring water from one cup to another

Tags

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Larissa is enjoying a camping trip with her friends and all of their dads. The dads decide to show the girls how to start a fire without the use of a lighter or match. Which of these is the best way to create the heat to start a campfire?

• Allowing the sun to shine on a pile of sticks

• Rubbing two large sticks together

• Blowing warm air onto a pile of sticks

• Breaking one long stick into smaller sticks

Adrian has two blocks of wood. What can Adrian do with the blocks so they will make heat?

• Place one block on top of the other

• Put the blocks under a heavy blanket

• Rub one block against the other

• Carefully take the temperature of the blocks

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-5

Ryan likes to wear rubber rain boots when it has been raining outside and the ground is wet. How do rain boots increase the amount of friction between his feet and the ground?

• The boots make him slip easier because they have smooth soles.

• The boots keep his toes from getting wet because they are rubber.

• The boots have rubber soles that grip the ground to prevent him from falling.

• The boots are stylish and do not affect the amount of friction between his feet and the ground.

What kind of energy can be made by rubbing a block on a table?

• magnetic

• light

• electric

• heat

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-3

NGSS.MS-PS3-4