Question

types of forces worksheet
name: khair b.
vocabulary
action - at - a - distance
contact
elastic
electrostatic
force
friction
gravitational
magnetic
tension
use your notes from pages 11 - 12 and the terms in the vocabulary box to fill in the blanks for the following five questions. each term may be used more than once.

1. a(n) force

is a push or a pull that acts on an object.
2)
forces only have an effect on objects that they touch.
3)
forces act on an object without touching them.
4)
works to slow down or stop motion due to surfaces rubbing against each other.
rope when it is pulled at either end.
a spring returns to its normal shape. these are examples of
force is experienced by a
force is exerted when

1. a(n)

have mass. a(n)
force pulls objects toward each other because they
a(n)
force pulls or pushes on metals such as iron.
differences in charge of the small particles that make up matter. these are examples of
force causes pushing and pulling forces due to
forces.

1. match each descriptor on the left with the best force on the right. you may use some forces more than once.

descriptor
an apple falls from a tree branch
a person uses a rope to pull a friend on a sled
a magnet holds a picture on a fridge
a person pulls a bow back and shoots the arrow
a sock is stuck to a sweater as it comes out of the dryer
when a person stops pedalling, the bicycle slows down
a meteor travelling through space moves faster and faster as it approaches earth
a bungee cord pulls a jumper back up toward the platform from which he jumped
your hands become warmer as you vigorously rub them together
when combing your hair, you notice hairs move outward from your head toward the comb
force
a. elastic
b. tension
c. friction
d. magnetic
e. electrostatic
f. gravitational

Explanation:

Step1: Recall force - type definitions

Contact forces act on objects they touch.

Step2: Identify contact - force example

Friction is a contact force that slows down motion due to surfaces rubbing against each other.

Step3: Recall action - at - a - distance force definitions

Action - at - a - distance forces act on objects without touching. Gravitational force pulls objects with mass towards each other, magnetic force acts on metals like iron, and electrostatic force is due to charge differences in particles.

Step4: Recall elastic and tension force definitions

Elastic force is exerted when a spring returns to its normal shape. Tension force is experienced by a rope when pulled at either end.

Step5: Match descriptors with forces

• An apple falls from a tree branch: Gravitational force (F) as gravity pulls the apple down.
• A person uses a rope to pull a friend on a sled: Tension force (B) in the rope.
• A magnet holds a picture on a fridge: Magnetic force (D).
• A person pulls a bow back and shoots the arrow: Elastic force (A) in the bowstring.
• A sock is stuck to a sweater as it comes out of the dryer: Electrostatic force (E) due to charge separation.
• When a person stops pedalling, the bicycle slows down: Friction force (C).
• A meteor travelling through space moves faster and faster as it approaches Earth: Gravitational force (F).
• A bungee cord pulls a jumper back up toward the platform from which he jumped: Elastic force (A).
• Your hands become warmer as you vigorously rub them together: Friction force (C).
• When combing your hair, you notice hairs move outward from your head toward the comb: Electrostatic force (E).

Answer:

• An apple falls from a tree branch: F. Gravitational
• A person uses a rope to pull a friend on a sled: B. Tension
• A magnet holds a picture on a fridge: D. Magnetic
• A person pulls a bow back and shoots the arrow: A. Elastic
• A sock is stuck to a sweater as it comes out of the dryer: E. Electrostatic
• When a person stops pedalling, the bicycle slows down: C. Friction
• A meteor travelling through space moves faster and faster as it approaches Earth: F. Gravitational
• A bungee cord pulls a jumper back up toward the platform from which he jumped: A. Elastic
• Your hands become warmer as you vigorously rub them together: C. Friction
• When combing your hair, you notice hairs move outward from your head toward the comb: E. Electrostatic