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Conduction can only occur between two objects when –

• one object is less dense than the other.
• both objects are in physical contact with each other.
• one of the objects is made of a metal.
• both objects are exactly the same temperature.

Radiation is a method of thermal energy transfer that moves -

• through empty space.
• when objects touch.
• only through solids.
• in the motion of fluids.

Heat transfer in boiling water.

• Conduction
• Convection
• Radiation

Tags

NGSS.MS-PS1-4

Heat transfers from an area of ____temperature to an area of ___ temperature.

• high to low
• low to high
• high to high
• It can travel high to low and low to high. 

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-3

The baby chickens are kept warm from the heat lamps demonstrates this type of heat transfer. 

• conduction
• convection
• radiation

The diagram to the right shows a solid iron bar that is being heated in a flame. The primary method of heat transfer in the solid iron bar is—

• convection
• conduction
• absorption
• radiation

Tags

NGSS.HS-PS3-4

On a cold rainy day a baby is touching a cold window.  It feels so cold. Which way is the heat moving moving? 

• Cold is moving from the window to the hand.
• Heat is moving from the hand to the window.
• Heat doesn't move.
• It moves in currents

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What Is the Net Force?

• 0 N

• 10 N right

• 10 N left

Tags

NGSS.MS-PS2-2

These forces are ______________

• Balanced Force

• Unbalanced Force

Tags

NGSS.MS-PS2-2

You push a box 35 N to the right. Your friend pushes the box 25 N in the same direction. What is the net force?

• 60 N balanced to the right

• 60 N unbalanced to the right

• 10 N balanced to the right

• 10 N unbalanced to the right

Tags

NGSS.MS-PS2-2