Topic 8 Elevate Science
Quiz
•
Science
•
7th Grade
•
Practice Problem
•
Hard
+1
Standards-aligned
Charles Martinez
FREE Resource
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21 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Two weights, A and B, are placed on opposite ends of a pivot. In which of the following situations is it IMPOSSIBLE for the moments to be balanced?
A weighs more than B and is closer to the pivot than B
A weighs less than B and is further from the pivot than B
A weighs more than B and is further from the pivot than B
A and B weigh the same and they are the same distance from the pivot
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which are two forces acting on a boat when it floats motionless in the sea?
Gravity and air resistance
Upthrust and normal force
Friction and magnetic force
Gravity and upthrust
3.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Akira sits on a see-saw. He sits 2 m from the pivot and his weight is 50 N. Calculate the moment. Include the correct unit in your answer!
4.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Nadia uses a screwdriver to open a tin of paint. The screwdriver is 0.3 m long and she applies 5 N of force. Calculate the moment. Include the unit in your answer!
5.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Taksheel opens a door. The handle is 20 cm long and he applies 4 N of force. Calculate the moment. Include the correct unit in your answer!
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Two people pull on opposite ends of a rope. They pull with the same force. What happens?
The rope starts to move to the left
The rope stays still in the middle
The rope starts to move to the right
The rope changes color
Tags
NGSS.MS-PS2-1
NGSS.MS-PS2-2
7.
FILL IN THE BLANK QUESTION
1 min • 1 pt
Mi wears shoes with an area of 0.05 square meters. She weighs 45 Newtons. Calculate the pressure (in Newtons per square meters) she exerts on the ground. DO NOT include the unit in your answer!
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