Ps2.1

A compass needle responds to a magnetic field, because the compass needle is a

•  generator.

•  motor.   

•  magnet.

•  transformer.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

_{^{The magnet's shown will}}

• not move

• attract

• repel

• all of the above

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

A piece of fur was rubbed on a pvc pipe. When the pipe was placed near an aluminum can, the can started to roll toward the pvc pipe. The pipe exerts an electric force on the can because:

• The pipe has a positive charge and the can has a negative charge.

• Electrons rubbed off onto the pipe so it has a negative charge.

• Both have a negative charge.

• Electrons rubbed off onto the pipe giving it an attractive positive charge.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

How many protons does Lithium have?

• 3

• 4

• 7

Tags

NGSS.MS-PS1-1

The graphic shows that only 3% of the Earth's water is fresh water. The graphic also shows that of this 3%, almost all of it is contained in two reservoirs. What are the two reservoirs that contain almost all of Earth's fresh water?

• glaciers and groundwater

• streams and estuaries

• marshes and swamps

• lakes and rivers

Tags

NGSS.MS-ESS2-4

Elements in the same ________ are more chemically similar.

• group

• period

• club

• table

If lots of sea water becomes frozen what will happen to the remaining water left behind?

• It will become less salty

• It will become more salty

• It will remain just as salty as ever.

• I thought salty meant something else.

What is a variegated leaf?

• One that has chlorophyll in some bits and not in others

• A random leaf

• A leaf that has chlorophyll in all parts of it

How does most of the water needed by the plant get into its leaves?

• It enters through the stomata

• The roots absorb it and then it travels up the stem

• It's made during a chemical reaction in the leaf

• The flowers capture water and deliver it to the leaves

Why do plants conduct photosynthesis?

• To make light

• To make mitochondria

• To make glucose

• To release carbon dioxide

Tags

NGSS.MS-LS1-6