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QR Challenge: Simple machines Mechanical Advantage

Created using the ClassTools QR Treasure Hunt Generator

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Teacher Notes

A. Prior to the lesson:

1. Arrange students into groups. Each group needs at least ONE person who has a mobile device.

2. If their phone camera doesn't automatically detect and decode QR codes, ask students to

3. Print out the QR codes.

4. Cut them out and place them around your class / school.

B. The lesson:

1. Give each group a clipboard and a piece of paper so they can write down the decoded questions and their answers to them.

2. Explain to the students that the codes are hidden around the school. Each team will get ONE point for each question they correctly decode and copy down onto their sheet, and a further TWO points if they can then provide the correct answer and write this down underneath the question.

3. Away they go! The winner is the first team to return with the most correct answers in the time available. This could be within a lesson, or during a lunchbreak, or even over several days!

C. TIPS / OTHER IDEAS

4. A detailed case study in how to set up a successful QR Scavenger Hunt using this tool can be found here.

Questions / Answers (teacher reference)

Question

Answer

1. 1.What type of simple machine are gears?wheel and axle
2. 2.What is the MA of a lever with a resistance arm of 4 m and an effort arm of 12 m?4
3. 3.It takes 150 N to push a 40 kg object up an inclined plane. what is the MA?
4. 4.What class of level is a wheelbarrow?2nd
5. 5.The wheel of a dirt bike has a radius of 40 cm, the axle has a radius of 15cm. What is the MA?
6. 6.What kind of pulley changes the direction of a force but offers no mechanical advantage?fixed
7. 7.What class of lever is a broom?3rd
8. 8.What kind of simple machine is the lid of a soda bottle?screw
9. 9.A mover uses a ramp to move a crate 1.5 m from the street to the bed of a truck. The ramp is 4.8 m long. What is the MA of this ramp?1.5/4.8
10. 10.What kind of simple machine is a door knob?Wheel and axle
11. 11.What class of lever has the fulcrum in the middle?1st
12. 12. What kind of simple machine is a Zip-line?moveable pulley
13. 13.To dig up a stump, you apply a force of 60 N to the shovel. The shovel applies a force of 900 N to the stump. What is the MA?60/900
14. 14.What kind of simple machine is the blade of a shovel?wedge
15. 15.What kind of simple machine is a staircase?inclined plane
16. 16. Output Force divided by Input force is the general equation for......?MA
17. 17. A system of pulleys allows a mechanic to lift an 1800 N engine. What is the MA of the pulley system if the mechanic must exert 800 N force to lift the engine?#3b
18. 18.How do you figure out the MA of a movable pulley?count the # of ropes
19. 19.Scissors are what class of levers?1st
20. 20.How can you figure out the MA of a srew?turns/inch pitch/circum

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=1.What_type_of_simple_machine_are_gears?

Question 1 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=2.What_is_the_MA_of_a_lever_with_a_resistance_arm_of_4_m_and_an_effort_arm_of_12_m?

Question 2 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=3.It_takes_150_N_to_push_a_40_kg_object_up_an_inclined_plane._what_is_the_MA?

Question 3 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=4.What_class_of_level_is_a_wheelbarrow?

Question 4 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=5.The_wheel_of_a_dirt_bike_has_a_radius_of_40_cm,_the_axle_has_a_radius_of_15cm._What_is_the_MA?

Question 5 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=6.What_kind_of_pulley_changes_the_direction_of_a_force_but_offers_no_mechanical_advantage?

Question 6 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=7.What_class_of_lever_is_a_broom?

Question 7 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=8.What_kind_of_simple_machine_is_the_lid_of_a_soda_bottle?

Question 8 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=9.A_mover_uses_a_ramp_to_move_a_crate_1.5_m_from_the_street_to_the_bed_of_a_truck._The_ramp_is_4.8_m_long._What_is_the_MA_of_this_ramp?

Question 9 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=10.What_kind_of_simple_machine_is_a_door_knob?

Question 10 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=11.What_class_of_lever_has_the_fulcrum_in_the_middle?

Question 11 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=12._What_kind_of_simple_machine_is_a_Zip-line?

Question 12 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=13.To_dig_up_a_stump,_you_apply_a_force_of_60_N_to_the_shovel._The_shovel_applies_a_force_of_900_N_to_the_stump._What_is_the_MA?

Question 13 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=14.What_kind_of_simple_machine_is_the_blade_of_a_shovel?

Question 14 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=15.What_kind_of_simple_machine_is_a_staircase?

Question 15 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=16._Output_Force_divided_by_Input_force_is_the_general_equation_for......?

Question 16 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=17._A_system_of_pulleys_allows_a_mechanic_to_lift_an_1800_N_engine._What_is_the_MA_of_the_pulley_system_if_the_mechanic_must_exert_800_N_force_to_lift_the_engine?

Question 17 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=18.How_do_you_figure_out_the_MA_of_a_movable_pulley?

Question 18 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=19.Scissors_are_what_class_of_levers?

Question 19 (of 20)

 


Simple machines Mechanical Advantage: QR Challenge

https://www.classtools.net/QR/decode.php?text=20.How_can_you_figure_out_the_MA_of_a_srew?

Question 20 (of 20)