25-26 8th Grade Science Final

Which hypothesis statement is written correctly?

• If there is more sunlight, the plants will grow more.

• If there is more sunlight, then the plants will grow more.

• The more sunlight, the more growth.

• Plants need more sunlight to grow.

Tags

NGSS.MS-LS1-5

What are the independent and dependent variables based on the graph?

• Independent- Position, Dependent-Time

• Independent- Time, Dependent-Position

• Independent-Errands, Dependent-Seconds

• Independent-Meters, Dependent-Errands

Which of the following is considered a testable question?

• Does boiling geranium seeds affect their seed germination?

• What causes a plant to grow?

• Which superhero has the most power?

• Will a strong hurricane hit the coast of Louisiana in the year 2025?

Tags

NGSS.MS-LS2-1

The reliability of a scientific explanation can be increased by __________.

• taking notes once the investigation has been completed

• changing the dependent variable when repeating the experiment

• changing the independent variable when repeating the experiment

• repeating the experiment several times

Tags

NGSS.MS-LS1-5

What type of variable remains the same throughout the experiment?

• Independent variable

• Dependent variable

• Constant

• Control Group

____________________ occurs when there is a change in position of an object with respect to a reference starting point.

• Motion

• No change

• Rest

• Stillness

Tags

NGSS.3-PS2-2

A force is best described as _______________.

• A pull only that can change the motion of an object

• A push only that must change the motion of an object

• A push or a pull that can change the motion of an object

• Something that must change the motion of an object

Tags

NGSS.MS-PS2-2

What does Newton’s 1st law of motion state?

• An object at rest will stay at rest unless acted upon by an unbalanced force. An object in motion will stay in motion unless acted upon by an unbalanced force.

• Force = mass x acceleration

• For every action, there is an equal and opposite reaction.

• All of the above.

We can determine the __________ based on the speed and direction of the object.

• acceleration

• net force

• velocity

• inertia

Mass can be defined as which of the following?

• The force of gravity pulling on an object

• The force that causes objects with mass to attract each other

• The amount of inertia that an object has

• A measure of how much matter is present in a substance