Quiz about 7th Grade 1st Semester Final Exam Review

Question 1

True or False: All solid objects deform when forces are applied to them

Accepted Answer

True

Answer

False

Question 2

A __________ is an instance of one moving object striking another.

Accepted Answer

Collision

Answer

Variable

Answer

Scenario

Question 3

Change in shape during a collision is caused by __________.

Accepted Answer

force

Answer

Energy transfer

Answer

gravity

Answer

All of the Above

Question 4

What is the maximum amount of deformation an object can withstand beyond it cracks or splits apart?

Accepted Answer

Breaking Point

Answer

Deformation Point

Answer

Elastic Limit

Question 5

_________ means to bend or change shape.

Accepted Answer

Deform

Answer

Collison

Answer

Force

Question 6

The largest amount a sample could be deformed and still return to its original shape is called the __________.

Accepted Answer

Elastic Limit

Answer

Breaking Point

Answer

Deformation Point

Question 7

What is a key characteristic of protective materials that makes them effective at absorbing impact?

Accepted Answer

b. They contain air pockets or spaces

Answer

a. They are completely solid with no gaps

Answer

c. They are made of metal only

Answer

d. They are always transparent

Question 8

Why does increasing the thickness of protective materials help reduce peak forces?

Accepted Answer

c. It extends the collision time

Answer

a. It makes the material stronger

Answer

b. It increases the material's weight

Answer

d. It makes the material more brittle

Question 9

What happens to energy when objects slide against each other due to friction?

Accepted Answer

b. Energy transfers into heat/temperature increase

Answer

a. Energy disappears completely

Answer

c. Energy remains constant in the objects

Answer

d. Energy transfers into light

Question 10

How can force be distributed to reduce damage during impact?

Accepted Answer

d. By spreading force over a larger area

Answer

a. By concentrating force on a single point

Answer

b. By using only rigid materials

Answer

c. By applying more pressure

Question 11

What happens to energy when friction occurs between two surfaces?

Accepted Answer

c. Temperature increases due to particle movement

Answer

a. Energy disappears completely

Answer

b. Energy transforms into sound only

Answer

d. Energy remains unchanged

Question 12

5. Which statement about protective devices is true?

Accepted Answer

c. They reduce force equally on both objects

Answer

a. They all work in completely different ways

Answer

b. They only protect one object in a collision

Answer

d. They only work at high speeds

Question 13

In what direction does friction act on a moving object?

Accepted Answer

c. Opposite to the direction of motion

Answer

a. In the same direction as motion

Answer

b. Perpendicular to motion

Answer

d. In random directions

Question 14

How does mass affect the force needed to speed up an object?

Accepted Answer

c. More mass requires more force

Answer

a. Mass has no effect on required force

Answer

b. Less mass requires more force

Answer

d. Force and mass are unrelated

Question 15

What is the relationship between an object's kinetic energy and collision damage?

Accepted Answer

d. More kinetic energy causes more damage

Answer

a. More kinetic energy causes less damage

Answer

b. Kinetic energy doesn't affect damage

Answer

c. Damage is random regardless of energy

Question 16

How does kinetic energy relate to stopping an object in motion?

Accepted Answer

c. More kinetic energy requires more force to stop

Answer

a. Less kinetic energy requires more force to stop

Answer

b. Kinetic energy doesn't affect stopping force

Answer

d. Stopping force is unrelated to motion

Question 17

How does air resistance affect energy transfer?

Accepted Answer

b. It transfers energy between objects and air particles

Answer

a. It has no effect on energy transfer

Answer

c. It only affects objects at rest

Answer

d. It creates more energy

Question 18

What is the mathematical relationship between kinetic energy and speed?

Accepted Answer

d. Kinetic energy is proportional to speed squared

Answer

a. Kinetic energy equals speed

Answer

b. Kinetic energy is inversely related to speed

Answer

c. Speed has no effect on kinetic energy

Question 19

Which statement about force and acceleration is correct?

Accepted Answer

d. More force causes more acceleration

Answer

a. Force and acceleration are unrelated

Answer

b. More force causes less acceleration

Answer

c. Force has no effect on speed

Question 20

What makes certain materials better at protecting objects during impact?

Accepted Answer

a. Their ability to deform under force

Answer

b. Their complete rigidity

Answer

c. Their smooth surface only

Answer

d. Their weight alone

Question 21

How does air resistance affect a moving object?

Accepted Answer

d. It opposes the object's motion

Answer

a. It increases the object's speed

Answer

b. It applies a force in the direction of motion

Answer

c. It has no effect on the object

Question 22

What happens when protective materials deform during impact?

Accepted Answer

b. They absorb energy from the collision

Answer

a. They become permanently damaged

Answer

c. They increase the peak force

Answer

d. They become more rigid

Question 23

What role does surface roughness play in friction?

Accepted Answer

b. It creates bumps that interact and resist motion

Answer

a. It reduces friction completely

Answer

c. It has no effect on friction

Answer

d. It only affects smooth surfaces

Question 24

What happens to an object's kinetic energy when its speed is doubled?

Accepted Answer

c. It becomes four times greater

Answer

a. It doubles

Answer

b. It remains the same

Answer

d. It becomes half as much

Question 25

In a collision between two objects, how do the forces compare?

Accepted Answer

b. The forces are equal but in opposite directions

Answer

a. The larger object exerts more force

Answer

c. The faster object exerts more force

Answer

d. The heavier object experiences less force

Question 26

What factor does NOT affect an object's elastic limit?

Accepted Answer

a. The object's color

Answer

b. The object's thickness

Answer

c. The object's shape

Answer

d. The type of material

Question 27

What happens when an object exceeds its breaking point?

Accepted Answer

c. It cracks or splits apart

Answer

a. It returns to its original shape

Answer

b. It becomes permanently deformed

Answer

d. It gains more elasticity

Answer

E.

Question 28

What happens when objects with higher kinetic energy collide?

Accepted Answer

d. They produce higher peak forces

Answer

a. They produce lower peak forces

Answer

b. They maintain constant speed

Answer

c. They experience no deformation

Question 29

All solid objects exhibit what property when force is applied?

Accepted Answer

c. Elastic deformation

Answer

a. Permanent deformation

Answer

b. Breaking

Answer

d. Color change

Question 30

What happens when an object exceeds its elastic limit?

Accepted Answer

c. It deforms permanently

Answer

a. It breaks immediately

Answer

b. It maintains its shape

Answer

d. It becomes more elastic

Question 31

Which statement about collisions is TRUE?

Accepted Answer

b. The peak forces are equal for both objects

Answer

a. Larger objects always apply more force

Answer

c. Slower objects apply more force

Answer

d. Forces are only equal if masses are equal

Question 32

What happens to all solid objects when they experience a collision or contact force?

Accepted Answer

b. They bend or change shape

Answer

a. They only change color

Answer

c. They completely break apart

Answer

d. They maintain their exact shape

Question 33

During a collision between two objects, which statement is ALWAYS true?

Accepted Answer

c. The objects make physical contact

Answer

a. Both objects are permanently damaged

Answer

b. The objects never change direction

Answer

d. Only one object experiences force

Question 34

What type of transfer occurs during every collision?

Accepted Answer

a. Energy transfer

Answer

b. Color transfer

Answer

c. Mass transfer

Answer

d. Temperature transfer

Question 35

When two objects collide, what is NOT necessarily true?

Accepted Answer

c. Damage must occur

Answer

a. Forces act between the objects

Answer

b. The objects make contact

Answer

d. Motion may change

Question 36

Which statement best describes the forces in a collision?

Accepted Answer

d. Forces exist between both objects

Answer

a. Forces only affect the larger object

Answer

b. Forces disappear immediately after contact

Answer

c. Forces act in only one direction

Question 37

Amy smashes her Switch with her softball bat. What category of collision is this?

Accepted Answer

Collision type B

Answer

Collision type A

Answer

Collision type C

Question 38

John threw his phone at the wall. Which type of collision does this demonstrate?

Accepted Answer

Collision type A

Answer

Collision type B

Answer

Collision type C

Question 39

The variable that is changed.

Accepted Answer

Independent Variable

Answer

Dependent Variable

Answer

Controlled Variable

Question 40

What do we call the variable that is being measured?

Accepted Answer

Dependent Variable

Answer

Independent Variable

Answer

Controlled Variable

7th Grade 1st Semester Final Exam Review

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