7th Grade 2nd Semester Final Review

What is the overall charge, if any, on the balloon in Diagram A.  

• Negative

• Positive

• Neutral

Tags

NGSS.MS-PS2-3

Which of the following statements best describes the motion of the object in the graph below?

• The object accelerated at a constant speed

• the instantaneous speed of the object was greater than 1 m/s

• The object moved at a constant speed

• The average speed of the object was less than 1 m/s

Tags

NGSS.MS-PS3-1

Matt has a mass of 60kg.  He pulls on a wagon with a mass of 30kg with a force of 20N.  The wagon remains unmoved.   The wagon exerts a force of ________________ on Matt.

• 30 N

• 60 N

• 15 N

• 20 N

Tags

NGSS.MS-PS2-1

Forces of 10N to the right and 5 N to the left are acting on a ball.   There is a 10 N force downward.   It accelerates horizontally to the right.  For this to happen, what is the other force in Newtons and the direction the force is acting? 

• 10 N Upward

• 5 N Left

• 10 N Right

• 10 N Downwards

Tags

NGSS.MS-PS2-2

Newton's first law of motion states that an object stays in constant motion unless a(n) ______________________________ force acts on it.

• balanced

• unbalanced

• acceleration

• None of the above

Arrange the following terms to show the order from the lowest level of organization to the highest level of organization:  organ system, cell, organ, tissue

• tissue, organ, cell, organ system

• organ system, organ, tissue, cell

• organ system, tissue, cell, organ

• cell, tissue, organ, organ system

Tags

NGSS.MS-LS1-3

According to Newton's second law of motion, ___________.

• F=m/v

• F=m/a

• a=F(net)/m

• None of the above

The statement "for every action, there is an equal but opposite reaction" is a statement of _________________.

• Law of Conservation of Momentum

• Newton's Second Law

• Newton's First Law

• Newton's Third Law

Tags

NGSS.MS-PS2-1

As in the case of unlike poles, unlike electric charges ___.

• attract each other

• repel each other

• exist in pairs

Tags

NGSS.MS-PS2-3

Normally, atoms are electrical neutral because there are ___________________.

• more electrons than protons

• equal numbers of protons and neutrons

• equal numbers of electrons and neutrons

• equal numbers of protons and electrons