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8th Grade Physical Science - Quarter Assessment Flashcards | StudBud
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8th Grade Physical Science - Quarter Assessment
8th Grade Physical Science - Quarter Assessment
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review for upcoming standardized test #physicalscience #matter #force #motion
Flashcards
22 cards
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Questions
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Answers
1
What is a unit of force in the metric system?
pound
joule
newton
kilogram
2
What is heat?
Change in the temperature in degrees Celsius
Energy transferred between two objects
Average kinetic energy of the particles in a substance
Total thermal energy of a substance
3
What is true of an object that is in free fall?
no forces act on the object
only gravity acts on the object
the forces of thrust and gravity are balanced
the forces of air resistance and gravity are balanced
4
The sidewalk is heated on a hot day. How do the sidewalk particles change?
Their kinetic energy decreases
They move freely from place to place
They move faster
They move closer together
5
What property of a metal coin would be different on Mars than on the Earth?
mass
density
weight
volume
6
Why do you weigh less on the moon than on Earth?
the moon has a smaller radius
the moon is more dense than Earth
the moon has less mass than Earth
the moon is closer to the sun
7
In which state of matter are the particles able to move around one another?
gases only
liquids only
solids, liquids and gases.
gases and liquids only
8
A solid rock is sitting on the ground. What best describes the particles inside the rock?
constantly sliding over each other
vibrating, but not changing place
always moving from place to place
not moving at all
9
The data below is for a moving car. What is the average speed of the car?
60 m/s
20 m/s
40 m/s
120 m/s
10
A car drives straight for 45 miles during 1 hour. What else do you need to figure velocity?
the total distance the car traveled
how long the car stopped for
how many times the car stopped
The direction the car traveled
11
Which represents the greatest acceleration?
200 m/s
200cm/s2
0.002km/s2
0.020km/s2
12
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
13
Erin warms hot chocolate in the microwave. What happens as the temperature increases?
The particles move farther apart
The particles have less energy
The particles move slower
The particles are arranged in a pattern
14
What must two objects have for gravity to exist between them?
mass
volume
roundness
solidness
15
What type of energy is stored in batteries?
kinetic
thermal
chemical
elastic
16
Which of these statements describes a physical change?
Aluminum cans getting crushed before recycling.
A banana starts to smell as it ripens.
Copper turning green when exposed to air.
Onions taste sweeter after they are cooked.
17
Which of these particles is the smallest?
an electron
an atom
a proton
a nucleus
18
How is temperature related to heat?
Raising the temperature causes the heat to increase
Temperature and heat are the same thing
Temperature is a measure of heat
Heat causes a change in the temperature of an object
19
What is the evidence that an unbalanced force is acting on an object?
The mass of the object changes.
The motion of the object is changing.
The object remains at rest.
The object has constant velocity.
20
Calcium is an element. What is the smallest particle you can have of calcium?
an electron from calclum
a proton from calcium
an atom of calcium
a molecule that contains calcium
21
Which unit is used to measure distance?
grams
seconds
centimeters
milliliters
22
Which of these statements correctly describes the law of conservation of energy?
The amount of Kinetic Energy is a constant value
Energy cannot be created nor destroyed, but can change forms
Objects can only have potential or kinetic energy, not both
The energy destroyed when objects stop is equal to the mass
