Tennessee Science Grade 7

Section 1: Work and Power

Self-Check Quiz - English

1
What is transferred when work is done?
A)mass
B)matter
C)velocity
D)energy
2
Which is an example of work being done in a scientific sense?
A)pushing against a stationary box
B)lifting a box
C)doing homework
D)carrying a box
3
What is a sign that work is being done?
A)motion
B)mass
C)matter
D)density
4
When you climb stairs and then walk down a hallway, in which direction is the work done?
A)downward
B)along the hallway
C)upward
D)in the opposite direction that you walk
5
What is the scientific formula for work?
A)W = F/d
B)W = F + d
C)W = F x d
D)W = F - d
6
The unit for work is a joule, which is equal to __________.
A)N/m
B)N + m
C)N x m
D)N - m
7
Power is measured by which units?
A)newtons
B)joules
C)watts
D)newton-meters
8
What happens to the amount of power expended when you are climbing stairs and then climb faster?
A)It increases.
B)It decreases.
C)It stays the same.
D)It stops.
9
When the pyramids were built, blocks were lifted from a quarry and moved across the desert. When was work done in a scientific sense?
A)moving the blocks across the desert
B)lifting the blocks
C)when lifting the blocks and when moving them across the desert
D)No work was done in a scientific sense.
10
A 5,000 N block was lifted 10 m. How much work was done?
A)500 J
B)50 J
C)50 000 J
D)5 000 J
Glencoe Online Learning CenterScience HomeProduct InfoSite MapContact Us

The McGraw-Hill CompaniesGlencoe

Please read our Terms of Use and Privacy Notice before you explore our Web site. To report a technical problem with this Web site, please contact the Web Producer.