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1st Semester Test (part 20)
Test Description: Cells and Life, Body Systems, Energy and Matter
Instructions: Answer all questions to get your test result.
1) What happens to particles when heat is added to a substance?
A
The average kinetic energy of the particles increases as the temperature increases.
B
it freezes
C
It turns to water vapor and evaporates.
D
it becomes stretchy
2) What are the different types of heat transfer?
A
radiation, evaporation, convection, gas
B
boiling, evaporation, gas, solid
C
radiation, conduction, convection, condensation
D
solid, water, gas, liquid
3) What is specific heat?
A
how hot the oven is set at and how it cooks the food inside
B
the amount of thermal energy it takes to increase temperature.
C
how to tell if something is hot or cold
D
what the temperature reads on a thermometer
4) Compare the specific heat of water and metals
A
water has a high specific heat where metals have a low specific heat
B
water has a low specific heat as well as metals
C
water has a low specific heat compared to metals that have a high specific heat
D
water has a high specific heat as well as metals
5) Explain the particle arrangement and motion for each state of matter:
A
solid: in random motion, liquid: vibration, gas: random motion
B
solid: tightly and freely, liquid: freely all over, gas: freely in confined space
C
solid: tightly together in random motion, liquid, vibration over each other, gas: freely in confined space
D
solid: tightly together vibration movement, liquid: freely in a confined space, gas: freely very spaced out random motion
6) What type of heat transfer is occurring when you hold a marshmallow over a fire?
A
particle movement through convection
B
touch through the marshmallow toughing the stick
C
heat waves through radiation
D
by touching the fire
7) Define kinetic energy
A
motion
B
energy from toasting a piece of toast
C
stored
D
the study of energy
8) What is a thermal conductor? Give some examples of a thermal conductor.
A
a material that allows energy to flow easily: a pot
B
a material that does not allow energy to flow easily: a pot
C
a material that allows energy to flow easily: a pot's handle
D
a material that does not allow energy to flow easily: a pot's handle
9) What is a thermal insulator? Give examples of a thermal insulator.
A
a material that does not allow energy to flow easily: a pot's handle
B
a material that allows energy to flow easily: a pot
C
a material that allows energy to flow easily: a pot's handle
D
a material that does not allow energy to flow easily: a pot's handle
10) Explain how heat transfer by conduction.
A
heat transfers like magnets
B
heat transfers through heat waves
C
heat transfers through the movement of particles
D
heat transfers through touch
11) Define potential energy
A
energy in motion
B
produced energy
C
stored energy
D
transferred energy
12) In order for heat to transfer between 2 objects they must be at different______________
A
levels of convection
B
temperatures
C
capacities
D
levels of thickness
13) What is transferred with a wave?
A
water
B
energy
C
air
D
medium
14) What does the energy in a wave do when amplitude increases?
A
the energy of the wave decreases
B
the wave becomes smaller
C
It causes the wave to fall
D
the energy of the wave also increases
15) What color do we see when all light is reflected off an object?
A
white
B
red
C
black
D
purple
16) How do light waves travel? Do they need matter to travel on?
A
when they travel through space, they have difficulty due to the matter that is in space
B
they travel through space because they do not need a medium to travel on
C
by way of sight
D
they travel through soundwaves
17) What is refraction and what causes it to occur?
A
refraction is when you have a bigger number on top and a smaller number on bottom then you flip it to make refreaction
B
refraction is the continued trajectory of light after passing through a glass window.
C
refraction is the bending of light from being passed from one medium to another at different angles
D
refraction is looking at something through a mirror
18) What is reflection and how does it occur?
A
reflection is the bright light you see when you walk outside for the first time of a day
B
reflection is when light hits something smooth and bounces off at the same angle it traveled from.
C
reflection is when you hit a ball back to where it came from
D
reflection is when light hits something ridged and bends in different angles
19) What colors will absorb more light?
A
light
B
dark
20) When color do we see when all colors of light are present?
A
black
B
a rainbow
C
red
D
white
*select an answer for all questions
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