Stretch your thinking with the toughest set in the topic. Third graders work through multiple-choice items on bicycle wheel-and-axle systems, block-and-tackle pulleys, what counts as work in science, and mountain roads that act like inclined planes. Fill-in-the-blank questions cover compound machines, pliers as paired levers, steering-wheel force, and the force-versus-distance trade-off.
Mastering this set means you can analyze any tool, name the simple machines inside it, and explain how they share the work.
Style:
Simple Machines
Part A: Multiple Choice
Circle the best answer for each question.
1. A bicycle uses several simple machines. Which one does the pedal and gear system act as?
A) Inclined plane
B) Wedge
C) Wheel and axle
D) Screw
2. Two pulleys used together let you lift a heavy load with even less force. What is this setup called?
A) A compound machine
B) A block and tackle
C) A double lever
D) A gear train
3. Which statement about work is correct?
A) Work happens only when an object moves
B) Holding a heavy book is always work
C) Simple machines create extra work
D) Work cannot involve force
4. A road that winds around a mountain instead of going straight up is an example of which simple machine?
A) Lever
B) Wedge
C) Pulley
D) Inclined plane
Part B: Fill in the Blank
Write the correct answer on each line.
1. A machine made of two or more simple machines working together is called a compound machine.
2. A pair of pliers combines two levers that pivot on a shared point.
3. Turning a large steering wheel requires less force than turning a small knob.
4. A shovel uses a wedge to cut into soil and a lever to lift it out.
5. The trade-off with simple machines is less force but greater distance.
Simple Machines
★ Part A: Multiple Choice
Circle the best answer for each question.
1. A bicycle uses several simple machines. Which one does the pedal and gear system act as?
A) Inclined plane
B) Wedge
C) Wheel and axle
D) Screw
2. Two pulleys used together let you lift a heavy load with even less force. What is this setup called?
A) A compound machine
B) A block and tackle
C) A double lever
D) A gear train
3. Which statement about work is correct?
A) Work happens only when an object moves
B) Holding a heavy book is always work
C) Simple machines create extra work
D) Work cannot involve force
4. A road that winds around a mountain instead of going straight up is an example of which simple machine?
A) Lever
B) Wedge
C) Pulley
D) Inclined plane
★ Part B: Fill in the Blank
Write the correct answer on each line.
1) A machine made of two or more simple machines working together is called a compound machine.
2) A pair of pliers combines two levers that pivot on a shared point.
3) Turning a large steering wheel requires less force than turning a small knob.
4) A shovel uses a wedge to cut into soil and a lever to lift it out.
5) The trade-off with simple machines is less force but greater distance.
Ready to Practice?
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9 Questions
12-18 minutes
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