If milk has a density of 1.035 g/mL, where would it fall if added to this density column?

• above the red

• below the red

• below the corn syrup

• above the green

Tags

NGSS.MS-PS1-2

Why do oxygen (O) and sulfur (S) have similar properties?

• They are in the same group and have the same number of valence electrons.

• They are both stable and unreactive.

• They are in the same period and have the same number of energy levels.

• They are both metalloids.

Newton's 3rd law says that forces are in pairs. Which identifies the action-reaction pair between the yellow toy elephant and the table?

• Action: The force of the baby against the table.
  Reaction: The force of the table on the toy.

• Action: The force of the elephant on the table.
  Reaction: The force of the table legs on the ground.

• Action: The force of the elephant on the table. Reaction: The force of the baby's hands on the table.

• Action: The force of the elephant on the table.

  Reaction: The force of the table on the elephant.

Tags

NGSS.MS-PS2-1

This race car driver drove 30 meters in 60 seconds. If he continues at the same speed, what will be his TOTAL distance traveled after 90 seconds? (only type the number)

Describe the motion of the boat at the beginning of the speed/time graph.

• The speed is constant for 10 seconds and then the boat stops for ten seconds.

• The speed is accelerating for 10 seconds and then it stops for the next ten seconds.

• The speed is increasing for ten seconds and then it is constant for ten seconds.

• The car is accelerating for 30 seconds and decelerating for 20 seconds.

Tags

NGSS.MS-PS3-1

A ball has a mass of 2.3 kilograms. What net FORCE, to the nearest whole Newton, will a person need to apply to accelerate the ball at a rate of 6.0 m/s²? (only type the number)

Tags

NGSS.MS-PS2-2

Which elementS have the same ENERGY LEVELS as Oxygen?

• Boron (B)

• Neon (Ne)

• Sulfur (S)

• Hydrogen (H)

This balanced equation for photosynthesis represents a reaction that involves how many atoms of oxygen? (only type the number)

Tags

NGSS.MS-LS1-6

A precipitate is the formation of a SOLID when liquid solutions are mixed. What type of change is this?

• physical

• chemical

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The diagram shows a hot air balloon rising. Propane gas tanks are seen at the bottom of the balloon. The energy transformations that occur when propane gas is used to lift the balloon are (a)   ​to (b)   to​ (c)   .

• chemical
• thermal
• mechanical
• light

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-6

NGSS.MS-PS3-3