Cast Practice

Students used a computer simulation to determine the variables that affect the gravitational force between two objects. Choose the claim that best agrees with the data from the chart:

• Mass does not affect the gravitational force between two objects.

• Mass is the only variable that affects the gravitational force between two objects.

• Distance is the only variable that affects the gravitational force between two objects.

• Both mass and distance are variables that affect the gravitational force between two objects.

Answer explanation

Both mass and distance are variables that affect the gravitational force between two objects as shown in the data from the chart.

Tags

NGSS.MS-PS2-4

What is the primary function of a cast in medical treatment?

• To immobilize a broken bone

• To enhance blood circulation

• To reduce inflammation

• To prevent infection

Which material is commonly used to make orthopedic casts?

• Plastic

• Fiberglass

• Wood

• Metal

In which of the following scenarios would a cast be most appropriate?

• A sprained ankle

• A fractured wrist

• A bruised knee

• A dislocated shoulder

What is the main advantage of using a fiberglass cast over a plaster cast?

• Lighter weight

• Higher cost

• More flexibility

• Easier to remove

Which of the following is a potential complication of wearing a cast for an extended period?

• Improved muscle strength

• Skin irritation

• Increased bone density

• Enhanced joint mobility

What is the purpose of a cast saw in the removal of a cast?

• To cut through the cast without harming the skin

• To melt the cast material

• To dissolve the cast

• To pull apart the cast

Which scientific principle is primarily involved in the hardening of a plaster cast?

• Evaporation

• Oxidation

• Hydration

• Sublimation

What is the role of padding in a cast?

• To provide comfort and protection

• To increase the weight of the cast

• To enhance the rigidity of the cast

• To allow air circulation

How does a cast help in the healing process of a broken bone?

• By keeping the bone in place

• By increasing blood flow

• By reducing pain

• By preventing infection