Forces and Energy Review

Which form of energy would move the sleigh ?

• Electrical energy

• Solar energy

• Heat energy

• Mechanical energy

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The Law of Conservation of Energy states that .................... .

• energy can be destroyed

• energy can not be created nor destroyed

• energy can only be destroyed using the force

• energy can be created

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

A candle makes heat and ................. energy.

• ice

• electricity

• sound

• light

Tags

NGSS.MS-PS1-4

The fulcrum of a lever acts as the ................... .

• load

• effort

• Support

• All of these

The upward push of water on a floating object is called ................... .

• Buoyant force

• Density

• Pressure

• Volume

A stretched rubber band regains it's original position on being released because of .................. .

• gravitational force

• elastic force

• frictional force

• Buoyant force

..................... energy is used to operate and run computers.

• Thermal

• Electrical

• Nuclear

• Solar

Which type of simple machine is a see-saw in the playground ?

• Lever

• Pulley

• Inclined Plane

• Wedge

Students attached both ends of a long wire to the poles of a battery and wrapped the wire around a spoon and the spoon was able to pick up five paper clips. The students wrap more wire around the spoon and want to test if the strength of the magnetic force has increased. Which of the following observations would indicate that wrapping more wire has increased the strength of the electromagnet?

• the spoon picks up 3 paper clips

• the spoon picks up 7 paper clips

• the battery runs out of energy

• the ends of the wire touch the battery's poles

Tags

NGSS.MS-PS2-3

Two balloons are given an electrostatic charge by rubbing them with a cloth. Which observation provides evidence that the balloons exert a force on each other even though they are not touching?

• Rubbing the cloth on the balloons more gives them more charge.

• Balloons 1 and 2 are pulled downwards by gravity.

• Moving balloon 1 towards balloon 2 causes balloon 2 to move away.

• The charge on the balloons gets weaker over time.

Tags

NGSS.MS-PS2-5