7th Grade 1st Semester Final Exam Part 1

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

• True
• False

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

• Collision
• Variable
• Scenario

Tags

NGSS.MS-PS2-1

If you push a box across a rough floor with a force of 10N, the friction force will be:

• Breaking Point
• Deformation Point
• Elastic Limit

Tags

NGSS.MS-PS2-2

If you push a box across a rough floor with a force of 10N, the friction force will be:

• Collison
• Deform
• Force

Tags

NGSS.MS-PS2-2

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

• Breaking Point
• Deformation Point
• Elastic Limit

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

• a. They are completely solid with no gaps
• b. They contain air pockets or spaces
• c. They are made of metal only
• d. They are always transparent

Tags

NGSS.MS-PS3-5

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

• a. It makes the material stronger
• b. It increases the material's weight
• c. It extends the collision time
• d. It makes the material more brittle

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

• a. Energy disappears completely
• b. Energy transfers into heat/temperature increase
• c. Energy remains constant in the objects
• d. Energy transfers into light

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Change in shape during a collision is caused by __________.

• Energy transfer
• gravity
• force
• All of the Above

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

How can force be distributed to reduce damage during impact?

• a. By concentrating force on a single point
• b. By using only rigid materials
• c. By applying more pressure
• d. By spreading force over a larger area

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2