What are Forces?

______________________ is a force of attraction between two objects. It acts even when objects are not touching. A balanced force B friction C gravity D heat

• balanced force

• friction

• gravity

• heat

____________________ is a force that opposes motion and acts between two objects that are touching. A unbalanced force B friction C balanced force D gravity

• unbalanced force

• friction

• balanced force

• gravity

A __________________ is a push or pull. A fold B fort C fable D force

• fold

• fort

• fable

• force

_____________________________ are forces on an object that are equal in size and opposite in direction. A unbalanced forces B friction C Newtons D balanced forces

• unbalanced forces

• friction

• Newtons

• balanced forces

Friction can also exist between air and a moving object. This is called ___________________________. A air balloon B air resistance C air renaissance D air horn

• air balloon

• air resistance

• air renaissance

• air horn

___________________________ are tools used to measure force. A magnified glass B tablespoons C spring scales D force meter

• magnified glass

• tablespoons

• telescope

• force meter

A large force will cause a _______________ change in the motion of an object. A small force will cause _______________ change. A large, little B some, no C no, some D little, large

• large, little

• some, no

• no, some

• little, large

What is an example of a force being applied and nothing happening? A kicking a soccer ball. B throwing a baseball. C shooting a basketball. D leaning against a wall.

• kicking a soccer ball

• throwing a baseball

• shooting a basketball

• leaning against a wall

Give an example of a force causing an object to stop moving. A shooting a basketball B pushing a car C catching a baseball D leaning on the wall

• shooting a basketball

• pushing a car

• catching a baseball

• leaning on the wall

Rubbing your hands together quickly will change the energy of motion to _____________________. A theory energy B motion energy C water energy D thermal energy

• theory energy

• motion energy

• water energy

• thermal energy