A force is best described as _______________.

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

A pull only that can change the motion of an object

A push only that must change the motion of an object

Something that must change the motion of an object

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.

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

Mass can be defined as which of the following?

A measure of how much matter is present in a substance

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

Which would BEST describe what occurs when a ball is thrown against a wall?

The ball exerts a force on the wall and the wall exerts a force back on the ball.

The ball will not bounce off the wall.

The ball hits the wall hard enough to bounce off of it.

The wall is stronger than the ball and neither exerts any forces.

The image below shows two opposite forces acting on a box, what can we say that is true about the effect of the forces on the box?

The forces are balanced. Thus, there is no change in forces acting on the box and the box’s motion is not affected.

It cannot be determined without knowing which man is stronger.

It cannot be determined without knowing the surface the box is on.

The forces are balanced. However, the forces acting on the box have increased and the box’s motion is affected.

The image below shows two opposite forces acting on a rope. What can we say is true about the effect of the forces on the rope?

The forces are unbalanced, and net force on the rope moves it to the right.

It cannot be determined without knowing which man is stronger.

It cannot be determined because one man is standing taller than the other.

The forces are unbalanced, and net force on the rope moves it to the left.

Magnetism is a __________.

force of attraction or repulsion.

Surrounding a magnet is a magnetic field that applies a force, a push or pull __________.

without actually touching an object.

with direct contact of objects.

with surfaces creating friction.

Coiling wire around an iron core and applying an electric current through the wire creates a temporary magnet called an electromagnet. What would increase the strength of an electromagnet?

Use a battery with more voltage.

Use a battery with less voltage.

Use fewer coils of wire around the nail.

This graph shows the change in the force of gravity as distance increases. The graph will never reach zero, which suggests that __________.

every object exerts gravitational force on every other object.

the force of gravity does not change regardless of distance.

more distant objects exert a stronger gravitational force on other objects.

Why are digital signals more reliable than analog signals?

Digital signals have only two distinct values, travel at a faster rate, and allow fewer disruptions.

Digital signals can be encoded for secure messages to be sent.

Analog signals are continuous, so if it is disrupted, the information has to be resent from the beginning.

The eight planets of the solar system can be divided into two groups, as shown in the table below. Which of the following correctly identifies the planets in these groups?

Group 1 contains the four outer planets, and Group 2 contains the four inner planets.

Group 2 contains the two outer planets, and Group 1 contains the six inner planets.

Group 1 contains the four inner planets, and Group 2 contains the four outer planets.

Group 2 contains the six outer planets, and Group 1 contains the two inner planets.

Why do the Northern and Southern hemispheres experience opposite seasons from each other?

While one is experiencing direct sunlight, the other is experiencing indirect sunlight leading to different seasons being experienced.

Their solstices and equinoxes are on different days.

They actually do have the same seasons.

The amount of moonlight experienced leads to different seasons.

What is the difference between waxing and waning moons?

Waxing moons are increasing light and waning moons are decreasing light

Waxing moons are shrinking and waning moons are growing

Waxing moons are decreasing light and waning moons are increasing light

Waxing moon phases are from full to new and waning moon phases are from new to full

Any individual offspring produced through asexual reproduction is always:

genetically identical to its parent

made up of cells with a cell wall

different from all of its siblings

24-25 Science Final

Science

8th Grade

NGSS covered

Used 23+ times

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75 questions

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MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a fire erupts, immediately _________.

notify the teacher.

run for the fire extinguisher.

throw water on the fire.

open the windows.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If you do not understand a direction or part of a laboratory procedure, you should ______.

figure it out as you do the lab.

try several methods until something works.

ask the teacher before proceeding.

skip it and go on to the next part.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following should NOT be worn during a laboratory activity?

loose clothing

dangling jewelry

sandals

all of the above

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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.

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

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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?

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

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24-25 Science Final

If a fire erupts, immediately _________.

If you do not understand a direction or part of a laboratory procedure, you should ______.

Which of the following should NOT be worn during a laboratory activity?

Which hypothesis statement is written correctly?

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

Which of the following is considered a testable question?

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

What type of variable remains the same throughout the experiment?

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

A force is best described as _______________.

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