Gear

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/gear

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the key principle?Gears transmit rotational motion and torque through the meshing of interlocking teeth
2. What is the primary applications?Controlling speed, torque, and direction of rotation in mechanical systems
3. How do gears change speed and torque?The gear ratio, which is the number of teeth on each gear, decides how fast one gear turns compared to the other. If one gear has twice as many teeth, it turns slower but pushes harder. This lets machines use the right speed and power.
4. What are some different kinds of gears?There are many types, like spur gears that spin on straight shafts, bevel gears that turn at an angle, worm gears that are perpendicular, and helical gears that have angled teeth. Each type helps solve a special problem in machines.

Gear Ratio: The ratio of the number of teeth on two meshing gears, determining the change in speed and torque.
Torque: The rotational equivalent of linear force, measuring the effectiveness of a force in causing rotation.
Kinematics: The branch of mechanics concerned with the motion of objects without reference to the forces that cause the motion.