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Semester 1 Review
Test Description: Review
Instructions: Answer all questions to get your test result.
1) Which has acceleration?
A
A bicycle turning
B
A ball sitting on the top of a hill
C
A dog walking at a steady speed
D
A car going a constant speed
2) How many atoms make up Na2SO4?
A
6
B
10
C
12
D
7
3) Which of these is an example of a physical reaction?
A
Crushed candy cane
B
Baking soda and vinegar
C
Iron rusting
D
Burning wood
4) What causes a rocket to move upward into the sky?
A
Action/reaction forces
B
Friction
C
Gravity
D
Potential energy
5) Your friend added several bags of groceries to his empty wagon. You could expect--
A
It uses less energy to move.
B
It moves faster.
C
It needs less time to stop.
D
It takes longer to accelerate.
6) Which part of digestion is a chemical change?
A
Food moves from your mouth to your stomach.
B
Saliva reacts with food to break it down.
C
Your teeth grind food into smaller pieces.
D
The stomach churns solid food into a liquid.
7) When is work being done?
A
When the student picks up the backpack and walks away.
B
When the student walks across the school.
C
When the student picks up her backpack.
D
When the student holds her backpack.
8) A car burning gas has what kind of energy transformation?
A
mechanical to heat to chemical
B
heat to chemical to mechanical
C
chemical to heat to mechanical
D
nuclear to heat to mechanical
9) How many atoms of hydrogen are in the molecule Ba(CH5O2)2
A
5
B
4
C
10
D
7
10) When a football is thrown, where does it have the least potential energy?
A
When the receiver is just about to catch it.
B
When the ball left the quarterback's hand.
C
When the quarterback is holding it.
D
When the ball is moving through the air.
*select an answer for all questions
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