stud
bud
Sign up
Log in
Home
Library
Explore
SAT
More
8th Grade Physical Science Review Part 1 Flashcards | StudBud
Explore
/
8th Grade Physical Science Review Part 1
8th Grade Physical Science Review Part 1
43 terms
·
StudBud Administration
·
90 plays
review for upcoming standardized test
Flashcards
43 cards
F
Practice quiz
P
Host live
L
Questions
43
Answers
1
Which unit is used to measure distance?
centimeters
grams
seconds
milliliters
2
Which of these statements correctly describes the law of conservation of energy?
Energy cannot be created nor destroyed, but can change forms
The amount of Kinetic Energy is a constant value
Objects can only have potential or kinetic energy, not both
The energy destroyed when objects stop is equal to the mass
3
Which of these is a chemical property of a sheet of paper?
the paper can be burned
the paper does not attract magnets
the paper does not conduct electricity
the paper can be crumpled
4
Which represents the acceleration?
km/s2
m/s
cm/s2
m/s2
5
What is a wave?
a disturbance that transfers energy
a disturbance that transfers matter
any type of energy that makes particles move
any type of matter that vibrates back and forth
6
What is fiberglass in the attic an example of?
dust barrier
A thermal insulator
building material
A thermal conductor
7
A car drives straight for 45 km during 1 hour. What else do you need to figure velocity?
The direction the car traveled
how many times the car stopped
the total distance the car traveled
how long the car stopped for
8
A lamp does 120 joules of work in 40s. What was the power output of the lamp?
less than 3 watts
exactly 3 watts
more than 30 watts
exactly 30 watts
9
How is temperature related to heat?
Raising the temperature causes the heat to increase
Heat causes a change in the temperature of an object
Temperature and heat are the same thing
Temperature is a measure of heat
10
What are you measuring when you take the temperature of something?
kinetic energy
potential energy
average kinetic energy
average potential energy
11
Which of these substances is a compound?
ammonia
nitrogen
chlorine
uranium
12
In which state of matter are the particles able to move around one another?
solids, liquids and gases.
gases only
liquids only
gases and liquids only
13
Which form of electromagnetic energy has the longest wavelength?
infrared waves
radio waves
gamma rays
ultraviolet waves
14
What type of energy transfer is demonstrated?
conversion
radiation
convection
conduction
15
What is heat?
Total thermal energy of a substance
Energy transferred between two objects
Average kinetic energy of the particles in a substance
Change in the temperature in degrees Celsius
16
Red in the visible light spectrum has a ________ wavelength compared to the other colors?
long
no
identical
short
17
The image below shows a wave. What type of wave is it?
transverse
longitudinal
medium
electromagnetic
18
The data below is for a moving car. What is the average speed of the car?
60 m/s
30 m/s
120 m/s
20 m/s
19
What type of energy is stored in batteries?
chemical
kinetic
thermal
elastic
20
What process is an example of a physical change?
a sandwich being broken down by your stomach
carrots being cut up for a salad
baking soda and vinegar bubbling
sodium metal reacting with water
21
When paper is burned, the mass of the ash is less than the original paper. Why?
The mass of the ash cannot be accurately measured.
the ash has less volume than the paper.
Some of the products were given off as a gas.
Some of the matter is destroyed during burning.
22
Erin warms hot chocolate in the microwave. What happens as the temperature increases?
The particles move slower
The particles move farther apart
The particles are arranged in a pattern
The particles have less energy
23
What is a unit of force in the metric system?
newton
kilogram
joule
pound
24
Which property of matter does not change regardless of how big a sample you have?
reactivity with oxygen
volume
density
flammability
25
Which state of matter takes up both the volume and shape of the container that holds it?
gas
liquid
solid
ice
26
The sidewalk is heated on a hot day. How is the energy being transferred?
radiation
convection
conversion
conduction
27
A car battery stores 12V of energy. What type of energy source is this battery?
engine battery
wet cell
electrical battery
dry cell
28
As you watch ice cream melting on a hot day, what are you observing?
the formation of a new substance
a chemical reaction
a physical change
a chemical change
29
The picture below shows the EM spectrum. Which letter shows the greatest energy
C
B
A
D
30
In the picture below, what part of a wave is represented by B?
amplitude
trough
crest
wavelength
31
Calcium is an element. What is the smallest particle you can have of calcium?
a molecule that contains calcium
a proton from calcium
an electron from calclum
an atom of calcium
32
What property of a metal coin would be different on Mars than on the Earth?
mass
weight
volume
density
33
Which of these statements describes a physical change?
Onions taste sweeter after they are cooked.
Aluminum cans getting crushed before recycling.
Copper turning green when exposed to air.
A banana starts to smell as it ripens.
34
As an ice cube melts into a liquid, what property of the water remains unchanged?
mass
volume
density
temperature
35
What must two objects have for gravity to exist between them?
roundness
mass
solidness
volume
36
What is true of an object that reach terminal velocity?
the forces of air resistance and gravity are balanced
only gravity acts on the object
no forces act on the object
the forces of thrust and gravity are balanced
37
A solid rock is sitting on the ground. What best describes the particles inside the rock?
always moving from place to place
constantly sliding over each other
vibrating, but not changing place
not moving at all
38
Why do you weigh less on the moon than on Earth?
the moon has less mass than Earth
the moon is more dense than Earth
the moon is closer to the sun
the moon has a smaller radius
39
What do microwaves transfer between a cell phone and a cell phone tower?
energy
sound
air particles
electricity
40
Which of these particles is the smallest?
an atom
an electron
a nucleus
a proton
41
Through which of these media do sound waves the slowest?
solid
gas
liquid
plasma
42
Which type of electromagnetic wave has the highest frequency?
radio waves
microwaves
infrared waves
visible light waves
43
What is the evidence that an unbalanced force is acting on an object?
The motion of the object is changing.
The mass of the object changes.
The object has constant velocity.
The object remains at rest.
