8th Science Midterm Review Question Preview (ID: 40271)


Review Over Chemistry, Motion, And Energy. TEACHERS: click here for quick copy question ID numbers.

What is weight?
a) How much mass an object contains
b) How many particles are contained in a unit of volume
c) The effect of gravity on the mass of a substance
d) How much time an object is at rest on the surface of a planet

What is friction?
a) An opposing force that resists the motion of an object.
b) A resistance to a change in motion.
c) A force that increases the speed of an object.
d) A force that causes all objects in the universe to be attracted to eachother.

What is the relationship between Kinetic and Potential energy?
a) As the mass of an object increases, so does it's energy.
b) As Kinetic energy increases, so does its potential energy.
c) As Kinetic energy increases, Potential energy decreases.
d)

What 2 factors effect the strength of the force of gravity?
a) Mass and weight
b) mass and distance
c) mass and volume
d) size and shape

Which is an example of chemical to thermal energy
a) A match
b) The sun
c) a flashlight
d) throwing a football

Which type of energy transformation is occurring when digesting food?
a) Mechanical to thermal
b) Chemical to electromagnetic
c) Chemical to Potential
d) Chemical to Thermal and Mechanical

What are 3 ways an object can accelerate?
a) Slam on brakes, bounce up and down, go in reverse
b) speed up, slow down, change direction
c) Go up, down, and backwards.
d) Slide, roll, and turn.

Which type of heat transfer ocurrs when you rub your hands together?
a) Mechanical to thermal
b) Thermal to Mechanical
c) Thermal to chemical
d) Kinetic to potential

Which of the following is an example of a compound?
a) Salt
b) Oxygen
c) Nitrogen
d) Soil

How many atoms are in a molecule of water (H2O)
a) 1
b) 2
c) 3
d) 4

Which of the following is an example of Velocity?
a) An object turning right at 30mph
b) An object traveling North at 30 mph
c) An object flying straight up.
d) An object traveling at a constant speed.

Which statement describes the motion of particles in a solid.
a) moving freely and occupying all space available.
b) Tightly packed but moving past eachother
c) Moving freely but in a fixed volume
d) Tightly packed in a fixed position.

Which statement describes the motion of particles in a gas.
a) moving freely and occupying all space available.
b) Tightly packed but moving past eachother
c) Moving freely but in a fixed volume
d) Tightly packed in a fixed position.

Which of the following is an example of a physical property of matter?
a) Density
b) Ability to burn
c) ability to rust
d) ability to react

All of the following are examples of chemical changes of matter exept
a) Cutting wood in half
b) Rusting Iron
c) Burning leaves
d) Baking Soda and Vinegar reacting.

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