8th Grade Science Final Review 2017

Create an image of a vibrant classroom with students taking a science quiz, featuring colorful posters on walls about physics and chemistry, and a teacher overseeing the students.

8th Grade Science Final Review

Test your knowledge and understanding of key 8th grade science concepts with our comprehensive final review quiz! With 38 multiple choice and checkbox questions, you can gauge your mastery of essential science topics.

Features of the quiz include:

Variety of question types
Covers core topics in chemistry, physics, and biology
Interactive and engaging format

38 Questions10 MinutesCreated by ExploringScience14

Which of the following states the law of conservation of mass ?

Energy is neither created nor destroyed in a chemical reaction.

Atoms are rearranged in a reaction and join new molecules.

Mass cannot be created or destroyed in a chemical reaction.

Compounds form a new compound with different properties.

Would you expect the pH sample of acid rain to be 4 or 9? Why?

9 b/c acid is higher on the pH scale

4 b/c acid is lower on the pH scale

What products would form when hydrochloric acid. HCl, and sodium hydroxide, NaOH, react?

NaCl2 + H2O

NaCl+H2O

What is the difference between a reactant and a catalyst?

There is no difference.

A reactant changes to form the product, a catalyst is unchanged.

In what ways do changes in pH affect the environment and living things? Give two ways.

- they make organisms live longer. - they clean ponds and lakes

- they kill living organisms through acid rain. - they ruin ponds and lakes through acid rain.

As you are travelling on spring break you watch your iPad. If you are the reference point and the iPad is the object, then is the iPad in motion? Why or why not?

No, because you are holding the iPad and it is not moving away from the reference pount

The iPad is in motion because the iPad has a reference point that is not in motion

The speed of light is 300,000,000 m/s. How long does it take light to travel the 58,000,000,000 m distance from the sun to Mercury? Convert answer to minutes and round to the nearest tenth.

193.3 minutes

3.2 minutes

A graph shows a roller coaster moving up hill. What does the straight upward slope on the graph show

Positive velocity

Negative velocity

Negative acceleration

Positive acceleration

Which of the following best represents acceleration as presented on a graph?

Velocity change vs time

Distance change vs time

Motion change vs time

Speed change vs time

In which of the following is a skater NOT accelerating?

Making circles at a constant speed

Going straight while slowing down

Going straight at a constant speed

Going straight while speeding up

Describe how to determine average speed.

Multiply distance x time. Multiply time x time. Divide first product by second product.

Distance traveled divided by time taken

As the value of one variable increases, the value of the other decreases at the same time

Inversely proportional

Directly proportional

Value of one variable increases, and the other variable increases at the same rate

Inversely proportional

Directly proportional

Which of the following is the energy that comes from changes in an atom's nucleus?

Chemical energy

Thermal energy

Nuclear energy

Light energy

Which of the following types of energy comes from a compound that changes as its atoms are rearranged?

Chemical energy

Thermal energy

Nuclear energy

Light energy

As a baseball flies through the air after being hit, which of the following types of energy does it have?

Kinetic energy

Chemical energy

Potential energy

Mechanical energy

Which energy is caused by an objects vibrations?

Chemical energy

Sound energy

Electrical energy

Thermal energy

If a moving object collides with an object at rest and the two objects stick together, their combined momentum will be ___________.

More than the original momentum of the object

Double the original momentum of the moving object

Equal to the original momentum of the moving object

Less than the original momentum of the moving object

In nuclear fission, the nucleus of a(n) __________ atom is split into tow smaller nuclei that release nuclear energy.

Hydrogen

Uranium

Plutonium

The energy equal to how much work is needed to lift an object to a certain height is called __________.

Where does the sun get its energy to light and heat our Earth?

From particles that generate thermal energy

From nuclear fusion

Why does a stretched bow have potential energy?

B/c once its released, it has KE

B/c it is based on the position

When a musician pulls the strings of a guitar, what happens to make the sound reach your ear?

The strings move which makes KE and that creates vibrations that send noises to your ears.

The string will have PE, it will vibrate when they let it go, it gets KE which gives sound energy that travels through the air which will travel through a medium and into your ear.

The energy that is produced by vibrations of electrically charged particles

Kinetic energy

Light energy

Electrical energy

A 2,000 kg car travelling at 22 m/s collides with a 500 kg moose moving -1 m/s. If the moose stays on the car, then what is the velocity of the car + moose combination (nearest tenth)?

Velocity of car and moose= 17.4 m/s

Velocity of car and moose= 21.9 m/s

8th Grade Science Final Review 2017

8th Grade Science Final Review

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