The rate of acceleration of an object is determined by the mass of the object and

the forces acting on the object.

the initial velocity of the object.

the direction of movement of the object.

the change in kinetic energy of the object.

A 50 N object is placed on a surface and starts to slide. What is the MOST likely reason the object begins to move?

An unbalanced force causes acceleration.

Gravity exerts a balanced force on the object.

Friction is applied to the object.

The forces acting on the object are in equilibrium.

A student in a rolling chair pushes off of a wall. Which force causes the student to move away from the wall?

the force applied by the wall on the student

the force applied by the student on the wall

the gravitational force acting on the student

the normal force on the student

What can be explained with the model?

The rotation of Earth on its axis forms day and night.

The rotation of the Sun on its axis forms day and night.

The revolution of Earth around the Sun forms day and night.

The revolution of the Sun around Earth forms day and night.

Which statement CORRECTLY explains the formation of ocean tides?

Ocean tides occur because of the gravitational pull from the Moon.

Ocean tides occur because of the revolution of the Moon around the Sun.

Ocean tides occur when the Moon comes in between the Sun and Earth.

Ocean tides occur at night when the Moon is partially lit by the Sun.

The strength of tides is related to the position of the Sun, Earth, and the Moon. How did the tides for October 10 compare to the tides for October 3?

The tides on October 10th were stronger than the tides on October 3rd.

The tides on October 10th were weaker than the tides on October 3rd.

October 10th and October 3rd produced spring tides.

October 10th and October 3rd produced neap tides.

Tides occur in the oceans at regular times every day because of

the gravitational pull of the Sun and the Moon.

upper atmospheric disturbances.

the tilt of Earth’s rotational axis.

density differences caused by temperature changes.

Scientists have collected data about many galaxies, including the Milky Way galaxy. What makes the Milky Way galaxy difficult to observe from Earth?

Earth is located inside the Milky Way galaxy.

The Milky Way galaxy absorbs more light than it emits.

The Milky Way galaxy is too distant for detailed observations.

Earth is moving in the opposite direction of the Milky Way galaxy.

Similar fossils have been found on different continents that are separated by massive oceans. What is the MOST likely explanation for how these fossils came to be found on both continents?

The continents were once attached to each other and then drifted apart.

The continents were both created through volcanic activity.

The fossils were brought to South America by explorers.

The animals crossed a land bridge that once connected the continents.

Wegner had 4 pieces of evidence that supported his theory of continental drift. Which of the following is NOT one of them?

plates fit together like puzzle pieces

similar rock layers and landforms

Which type of plate boundary is MOST responsible for the formation of folded mountains?

convergent boundary between two continental crusts

divergent boundary within an oceanic crust

divergent boundary within a continental crust

convergent boundary between two oceanic crusts

Which movement of tectonic plates causes a rift valley to form?

Two tectonic plates separated from each other.

Two tectonic plates collided with each other.

One tectonic plate slid under another.

One tectonic plate slid past another.

8th Grade Science 1st Semester Test Review

8th Grade

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40 Qs

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8th Grade Science 1st Semester Test Review

Quiz

•

Science

•

8th Grade

•

Practice Problem

•

Medium

•

NGSS

MS-ESS1-1, MS-PS2-2, MS-PS1-5

+11

Standards-aligned

Natasha Garza

Used 1+ times

FREE Resource

40 questions

Show all answers

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many atoms of oxygen are on the product side?

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

How many total atoms are in one formula unit of the compound FeC₅O₅?

Tags

NGSS.MS-PS1-1

FILL IN THE BLANK QUESTION

1 min • 1 pt

How many atoms of sodium are included in one formula unit of the compound Na₂C₂O₄?

Tags

NGSS.MS-PS1-1

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

A scientist studies the following chemical equation for the production of water. 2H₂ + O₂ → 2H₂O What happens to the mass of the reactants during this chemical reaction?

mass of oxygen stays the same

mass of hydrogen doubles

mass of oxygen decreases

mass of hydrogen increases

Tags

NGSS.MS-PS1-5

MULTIPLE SELECT QUESTION

3 mins • 1 pt

The conservation of matter can be demonstrated by using chemical equations. Which chemical equations do NOT follow the law of conservation of mass ? (There is more than 1)

I₂ + 5Cl₂ + 6H₂O → 2HIO₃ + 10HCl

Cl + 4Na → 4NaCl

4P + 5HNO₃ → 5NO + 3H₃PO₄

Tags

NGSS.MS-PS1-5

FILL IN THE BLANK QUESTION

1 min • 1 pt

The picture shows a chemical reaction. According to the law of conservation of mass, what will be the mass (in grams) of water formed in the product? Enter your answer below. Enter only the number, not units.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

MULTIPLE CHOICE QUESTION

1 min • 1 pt

The force diagrams show different forces acting on five different boxes. How many boxes will experience motion?

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

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8th Grade Science 1st Semester Test Review

40 questions

How many atoms of oxygen are on the product side?

How many total atoms are in one formula unit of the compound FeC₅O₅?

How many atoms of sodium are included in one formula unit of the compound Na₂C₂O₄?

A scientist studies the following chemical equation for the production of water. 2H₂ + O₂ → 2H₂O What happens to the mass of the reactants during this chemical reaction?

The conservation of matter can be demonstrated by using chemical equations. Which chemical equations do NOT follow the law of conservation of mass ? (There is more than 1)

The picture shows a chemical reaction. According to the law of conservation of mass, what will be the mass (in grams) of water formed in the product? Enter your answer below. Enter only the number, not units.

The force diagrams show different forces acting on five different boxes. How many boxes will experience motion?

The box is being pushed to the right with a force of 150 newtons, and to the left with a force of 300 newtons. What is the magnitude of the net force on the box?

The rate of acceleration of an object is determined by the mass of the object and

A 50 N object is placed on a surface and starts to slide. What is the MOST likely reason the object begins to move?

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