Science
9th - 10th Grade
HS-PS3-2 covered
Used 2+ times
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15 questions
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1.
MULTIPLE SELECT QUESTION
1 min • 1 pt
What are three ways in which simple machine can make the work easier ?
Changing the direction of the force
increasing speed
increasing force
increase work
2.
MULTIPLE SELECT QUESTION
45 sec • Ungraded
How can a lubricant increase the efficiency of a machine?
by increasing friction
by reducing friction
decreasing conversion of mechanical energy into thermal energy
Tags
HS-PS3-2
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Scientist consider conservation of energy to be a _________.
theory
Law
Hypothesis
Tags
HS-PS3-1
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
At what point on the ball's path is the kinetic energy from the ball's motion the least?
at the lowest point
at the Highest point
at the starting point
Tags
HS-PS3-2
5.
MULTIPLE SELECT QUESTION
45 sec • 1 pt
Give at least two examples of how different forms of energy can be stored.
Chemical energy of food & fuels
Gravitational potential energy of the Earth and the Sun
Kinetic energy of the moving car
thermal energy of the heated objects
Tags
HS-PS3-2
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A book is sliding across a horizontal table slows down and comes to a stop. The book's kinetic energy was converted into what form of energy?
Chemical energy
Thermal energy
sound energy
7.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Mechanical energy is always constant.
True
False
Tags
HS-PS3-2
HS-PS3-1
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