4G-SC-Collisions

Question 1

An encounter between two objects is called a ___________. After the encounter, there is a change in energy.

Answer 1

Collision

Question 2

What is kinetic energy?

Answer 2

The energy an object has when it is in motion

Question 3

What is mass?

Answer 3

A measure of the amount of matter in an object

Question 4

What does the amount of kinetic energy in an object depend on?

Answer 4

The objects’ mass and speed

Question 5

If a 7-pound bowling ball and a 1-pound basketball are rolling along at the same speed, which ball has more kinetic energy?

Answer 5

bowling ball

Question 6

Which of the following is an example of a collision that does not cause damage?

Answer 6

A pencil writing on a piece of paper

Question 7

In a collision between a car and a truck, why does the car have more damage?

Answer 7

The truck had more kinetic energy, which was transferred to the car.

Question 8

Automobile accidents is an example of _____________.

Answer 8

hard collisions

Question 9

If you rub your hands together, why do they get warm?

Answer 9

Some of the kinetic energy is converted to heat energy.

Question 10

What is friction?

Answer 10

A force that occurs when two objects touch

Question 11

What is a collision?

Answer 11

An encounter between two objects

Question 12

The more ________ in an object, the more kinetic energy it has.

Answer 12

mass

Question 13

If two 7-pound bowling balls are rolling along at different speeds, does the faster one or the slower one have more kinetic energy?

Answer 13

faster

Question 14

Why is there more damage in an accident with fast moving cars than with slow moving cars?

Answer 14

Because there is more kinetic energy in the fast moving cars

Question 15

In a collision, kinetic energy _____________.

Answer 15

is transferred from one object to another

Question 16

In a collision, some kinetic energy that is transferred is converted to _______ and _______ energy.

Answer 16

heat and sound

Question 17

All collisions ________ cause damage.

Answer 17

do not

Question 18

If two objects have the same mass, does the faster one or the slower one have more kinetic energy?

Answer 18

faster

Question 19

If two objects are moving at the SAME speed, the one with more mass has ______ kinetic energy than the one with less mass.

Answer 19

more

Question 20

Faster moving objects lead to a greater potential to cause damage in collisions because

Answer 20

Faster moving objects have more kinetic energy

Question 21

When you rub your hands together, why do they make a “swish, swish” sound?

Answer 21

because kinetic energy is turned into sound energy

Question 22

If your pencil rests on paper, is it colliding with the paper?

Answer 22

no

Question 23

If your pencil is writing on paper, is it colliding with the paper?

Answer 23

yes

Question 24

If a truck collides with the car, which vehicle will be more damaged?

Answer 24

car

Question 25

Which has more kinetic energy, if their speed is the SAME, a car or a truck?

Answer 25

truck

Question 26

Objects with more ________ have more kinetic energy, leading to greater potential to cause damage in collisions.

Answer 26

mass

Question 27

Slower moving objects have _______ kinetic energy than faster moving objects.

Answer 27

less

Question 28

Writing with a pencil is an example of __________.

Answer 28

soft collision

Question 29

In automobile accidents kinetic energy causes _________ and _________.

Answer 29

movement and damage

Question 30

In a collision, the amount of ___________ energy that each object has affects the result of the collision.

Answer 30

kinetic

Question 31

Which car will have more kinetic energy, a faster one or a slower one?

Answer 31

faster