Science STAAR Review

In the case of a car crash, the body’s inertia will continue to carry it to the right. However, if the person is wearing a seatbelt, in which direction will this force act?

• to the right

• to the left

• upward

• downward

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Suppose you pull Nick, who is standing on a skateboard, using a rope at a constant acceleration. What happens when you double the mass and add a friend?

• There will be no change to the required amount of force.

• The amount of force required is slightly increased.

• The amount of force required is doubled.

• The amount of force required is four-times as great.

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NGSS.MS-PS2-2

Once in orbit, the space shuttle used very little, if any, rocket power to maintain its speed despite traveling over 15,000 mph! How were NASA engineers able to do this?

• More mass equals more acceleration

• The space shuttle was able to use a special coating in order to achieve its fast speed in space.

• Gravity provides the necessary force to keep the space shuttle traveling at a high rate of speed.

• More force at liftoff equals more acceleration

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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

What are the appropriate units to describe acceleration?

• m/p

• m/h

• m/s

• m/s square

Which of the following best describes an electron?

• It has no charge and about the same mass as a proton

• It has a negative charge and much less mass than a proton

• It has a positive charge and much more mass than a neutron

• It has a negative charge and about the same mass as a neutron

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A student is studying the ways different elements are similar to one another. Diagrams of atoms from four different elements are shown below.
Which two atoms are of elements in the same group in the periodic table?

• Atom 1 and Atom 2

• Atom 1 and Atom 4

• Atom 2 and Atom 3

• Atom 3 and Atom 4

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NGSS.MS-PS1-1

The scientist spilled a few drops of dilute hydrochloric acid (HCl) on a lab table. For safety purposes, the scientist sprinkled some baking soda (NaCO₃) onto the spill. Which observation would provide the best evidence that a chemical reaction occurred?

• The baking soda and hydrochloric acid combined, and bubbles formed.

• The baking soda absorbed the hydrochloric acid.

• Some of the baking soda dissolved in the hydrochloric acid.

• The hydrochloric acid evaporated, leaving only the baking soda.

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NGSS.MS-PS1-2

_________ is an objects tendency to resist changes in motion (ex. speeding up, slowing down, stopping)

• Force

• Inertia

• Friction

• Newton

Which of Newton's laws states that the net force on an object is equal to the objects mass multiplied by its acceleration and it takes more force to move more mass?

• Law of Inertia

• Law of Force and Acceleration

• Law of Action-Reaction

• Law of Movement

Tags

NGSS.MS-PS2-2