Team 1
0
Team 2
0
Teams
Name
Score
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Loading
×
heart
Other team wins 25 points!
Oops!
×
star
Double points!
Okay!
×
rocket
Go to first place!
Okay!
×
thief
Give points!
5
10
15
20
25
15
×
Name 5 things we see in our lives that use pulleys
clothesline, blinds, flagpoles, cranes, old water wells, window washers
Oops!
Check
Okay!
Check
25
×
What can gears do? (What is their purpose?)
They can change the speed and direction of motion. Also - they make work easier
Oops!
Check
Okay!
Check
×
heart
Other team wins 10 points!
Oops!
×
magnet
Take 20 points!
Okay!
×
gift
Win 10 points!
Okay!
×
banana
Go to last place!
Oops!
×
heart
Other team wins 20 points!
Oops!
×
gift
Win 15 points!
Okay!
×
gift
Win 25 points!
Okay!
×
baam
Lose 15 points!
Oops!
15
×
What is the benefit of a movable pulley?
It makes lifting the load easier - it uses half of the effort force
Oops!
Check
Okay!
Check
15
×
What is the disadvantage of a fixed pulley?
The effort force is the same - it doesn't decrease the effort force.
Oops!
Check
Okay!
Check
15
×
What are spur gears?
Gears that meet on a flat or horizontal surface
Oops!
Check
Okay!
Check
15
×
True/False: Gear beside each other in a gear train move in the same direction
False - gears move in the opposite direction
Oops!
Check
Okay!
Check
20
×
What is a rack and pinion?
A gear system in which a single gear meets with a toothed rack
Oops!
Check
Okay!
Check
15
×
What units are used to measure force?
Newtons (N)
Oops!
Check
Okay!
Check
15
×
If the first gear in a gear train is turning clockwise, what direction is the second gear?
counter clockwise
Oops!
Check
Okay!
Check
20
×
If the first gear has 8 teeth and the second gear 16 teeth, how many times does the smaller gear turn for every 1 turn the larger gear rotates?
twice (2 times)
Oops!
Check
Okay!
Check
20
×
What is a worm gear?
Gears in which an axle or shaft has a screw thread that connects with another gear
Oops!
Check
Okay!
Check
15
×
What is a gear train?
A group of two or more gears working together
Oops!
Check
Okay!
Check
15
×
What are bevel gears?
Gears that meet at an angle
Oops!
Check
Okay!
Check
×
Restart
Review
Join for Free
;
Your experience on this site will be improved by allowing cookies.
Allow cookies
