Science SGO

Question 1

to describe velocity you need to know __________ and ___________

Answer 1

speed direction

Question 2

acceleration is any change in _____________ and _______________

Answer 2

speed and direction

Question 3

Inertia resists ______________ in motion

Answer 3

any change

Question 4

Forces that are equal in size but opposite in direction are ___________ and do not cause a change in motion.

Answer 4

balanced

Question 5

Newton’s first law of motion states that an object remains at rest unless an ___________ force acts on it.

Answer 5

unbalanced

Question 6

Whenever a body is in motion, there is always _________ to oppose the motion.

Answer 6

friction

Question 7

The region of low pressure in a sound wave is called a ____________

Answer 7

rarefraction

Question 8

Doubling the mass of an object will ________ the force.

Answer 8

double

Question 9

As the distance between two objects increases, the gravitational force between the objects ______________.

Answer 9

decrease

Question 10

waves transport ______

Answer 10

energy

Question 11

when light bounces off a surface, it’s called __________

Answer 11

reflection

Question 12

To produce sound, an object must be ____________

Answer 12

vibrating

Question 13

Sound travels fastest in which type of matter?

Answer 13

solid

Question 14

If you pass a building with a siren sounding, as you move away from the building, the sirens will sound ________ in pitch.

Answer 14

lower

Question 15

A light wave is which type of energy?

Answer 15

electromagnetic waves

Question 16

The longest wavelength in the electromagnetic spectrum is the _________

Answer 16

radio wave

Question 17

The material in which a wave travels is a _________

Answer 17

medium

Question 18

If an object looks blue, it reflects ________ frequencies of light waves.

Answer 18

blue

Question 19

If light waves change speed when they pass from one medium into another, the light will be ___________.

Answer 19

refracted

Question 20

Humans are able to only see ______ Light

Answer 20

visible

Question 21

Which of the following wavelengths would have the highest frequency?
a. 600m
b. 0.5m ·
c. 450m
d. 330m

Answer 21

B. 0.5m

Question 22

Four items are left out in the sunshine for two hours. Which item will experience the least increase in temperature and why? Blue sweatshirt, black chair, white hat

Answer 22

White hat

Question 23

Which form of electromagnetic radiation has the highest amount of energy?

Answer 23

gamma ray

Question 24

Which of the following is a form of non­mechanical energy?
kinetic
potential
solar

Answer 24

solar

Question 25

Potential energy is energy that is ________

Answer 25

stored

Question 26

Name some energy resources that are considered renewable

Answer 26

Wind, solar power

Question 27

Mechanical energy is the energy associated with ___________ and ______

Answer 27

position and motion

Question 28

What is the difference between analog and digital?

Answer 28

Digital is more reliable for sending information because it uses a series of 0 and 1, which is not as affected by human error.

Question 29

Name some physical properties of matter.

Answer 29

mass volume denisty

Question 30

Which subatomic particle in the atom has a negative charge?

Answer 30

electron

Question 31

Which is NOT a sign of a chemical reaction? Melting Fire Unexpected Color change Precipitate

Answer 31

melting

Question 32

The atomic number of an element tells you the number of ________ in an atom

Answer 32

protons

Question 33

Two substances are poured into a cup and a reaction occurs. A thermometer is placed in the cup and the temperature in the surrounding area begins to increase. Based on this information, was the reaction endothermic or exothermic?

Answer 33

exothermic

Question 34

Write B if the equation is balanced and U if it is unbalanced S8 + O2 ---> 8SO2 16Ag + S8 ---> 8Ag2S H2 + N2 ---> 2NH3

Answer 34

U B U

Question 35

Heat flows from ________ to _________

Answer 35

hottest to coolest

Question 36

Why do we use synthetic polymers? a. Because natural polymers are too expensive b. Because natural polymers wear out quickly c. Sometimes natural materials are not available d. All of the above

Answer 36

D

Question 37

Give an example of a natural polymer?

Answer 37

cotton, silk

Question 38

____________ are the beginning substances in a chemical equation

Answer 38

reactants

Question 39

A reaction in which energy is released is called ______________.

Answer 39

exothermic

Question 40

Give an example of a chemical symbol that is a compound

Answer 40

H2O