Science STARR Review

A ball at the top of a hill has ________ ________ because if pushed it will roll down the hill.

• Mechanical Force

• Unbalanced Energy

• Potential Energy

• Unbalanced Force

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NGSS.MS-PS2-4

NGSS.MS-PS3-2

When a student runs and kicks a ball, they have applied an ___________ force to move the ball.

• Balanced

• Magnetic

• Spring

• Unbalanced

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

Standing in line is an example of a ________ ________ since you are not moving forward, backward, or sideways.

• negative acceleration

• balanced force

• unbalanced force

• 1st law of motion

Which is newtons 2nd law

• Acceleration is a change in speed

• Acceleration is a change in action

• Acceleration is a change in name

• Acceleration is a change in velocity

Which type of force(s) will cause a change in an object's motion?

• gravity

• balanced forces

• unbalanced force

• net force

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NGSS.MS-PS2-2

What are the appropriate units to describe acceleration?

• m/p

• m/h

• m/s

• m/s square

The atoms of a certain element each contain 11 protons and 1 valence electron. Which statement correctly identifies this element and describes its chemical reactivity?

• The element is sodium, and it is highly reactive

• The element is fluorine, and it is highly reactive

• The element is sodium, and it is not very reactive

• The element is fluorine, and it is not very reactive

How many of each atom are in the compound above?

• 1 magnesium atom, 2 iron atoms, and 4 oxygen atoms

• 3 magnesium atoms, 2 iron atoms, and 4 oxygen atoms

• 6 magnesium atoms, 6 iron atoms, and 12 oxygen atoms

• 3 magnesium atoms, 6 iron atoms, and 12 oxygen atoms

Tags

NGSS.MS-PS1-1

Look at the pictures above. A shows the bag before the vinegar and baking soda are mixed together, and B shows it after they are mixed together. In which picture do the contents of the bag have the greater mass?

• The mass is greater in A—before they are mixed.

• The mass is greater in B—after they are mixed.

• The mass is the same in both.

• The mass depends on the temperature.

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Which of the following is the best clue that a chemical reaction has taken place?

• Change in color

• Change in state

• Change in particle size

• Change in volume

Tags

NGSS.MS-PS1-2