Science Vocab

Question 1

Radiation

Answer 1

the emission of energy as electromagnetic waves or as moving subatomic particles, especially high-energy particles that cause ionization.

Question 2

Convection

Answer 2

the movement caused within a fluid by the tendency of hotter and therefore less dense material to rise, and colder, denser material to sink under the influence of gravity, which consequently results in transfer of heat.

Question 3

Physical property

Answer 3

can be observed or measured without changing the composition of matter.

Question 4

Physical change

Answer 4

in matter that involves the substance going from one physical state to another.

Question 5

Chemical change

Answer 5

occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively.

Question 6

Chemical property

Answer 6

is any of a material’s properties that becomes evident during, or after, a chemical reaction; that is, any quality that can be established only by changing a substance’s chemical identity.

Question 7

Speed

Answer 7

of an object is the magnitude of its velocity

Question 8

Friction

Answer 8

When to things rub together

Question 9

Newtons 1st law

Answer 9

An object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Question 10

Newtons 2nd law

Answer 10

The acceleration of an object as produced by a net force is directly proportional to the magnitude of the net force

Question 11

Newtons 3rd law

Answer 11

For every action, there is an equal and opposite reaction.