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Unit exam 7th Physics, SI, gravity, force, speed, machines

Total questions: 36

Worksheet time: 49mins

Name
Class
Date
1.

The basic unit of length in the metric system is the

a)

foot.

b)

kilometer.

c)

meter.

d)

mile.

2.

The SI unit of time is the

a)

minute.

b)

hour.

c)

second.

d)

day.

3.

The SI unit of temperature is the

a)

kelvin.

b)

degree Celsius.

c)

metric degree.

d)

degree Fahrenheit.

4.

The basic SI unit for measuring mass in the metric system is

a)

meter.

b)

ounces.

c)

liter.

d)

gram.

5.

An accepted international system of measurement, also known as SI units, is the

a)

International System of Units

b)

System of International Measurements

c)

System of Intellectual Units

d)

Units of International Measurement

6.

How many kilometers are in 62.001 centimeters?

a)

62,001

b)

.062001

c)

6.2001

d)

.00062001

7.

What is the SI unit for Mass/weight?

a)

Meter/kilometer

b)

Ampere/volts

c)

Kelvin/Celsius

d)

Kilogram/Newton

8.

Which is equal to  10510^5  ?

a)

0.00001

b)

100,000

c)

1,000,000

d)

0.000001

9.

Which is equal to  10−510^{-5}  ?

a)

-0.00001

b)

100,000

c)

0.00001

d)

0.000001

10.

Fill in the "?" to make the equation true:

10?=1,000,00010^?=1,000,000  



(a)  

11.
Which is a true statement?
a)
10-3 = 0.001
b)
10-5 = 0.0001
c)
10-1 = 0.01
d)
10-2 = 0.001
12.
Write the following in standard form:
106
a)
0.000001
b)
0.00001
c)
1,000,000
d)
100,000
13.

6. 1 day is equal to how many hours?

a)

24

b)

30

c)

48

14.
convert 650 m to km
a)
6.5
b)
0.65
c)
65
d)
0.065
15.
1000 g= ______ kilogram(s)
a)
1
b)
10
c)
100
d)
1000
16.
Which unit of measurement is greatest?
a)
decimeters
b)
millimeters
c)
centimeters
d)
kilometers
17.

730 m = ________km

a)

0.73

b)

73

c)

730

d)

7300

18.
To solve an equation, the goal is to __________ the variable on one side.
a)
Evaluate
b)
Leviate
c)
Isolate
d)
Reciprocate
19.
Any object with mass has gravity.
a)
True
b)
Sometimes
c)
False
d)
Never
20.
Which of the following will not change in different gravitational fields?
a)
wieght
b)
force
c)
mass
d)
pounds
21.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
22.
A person would weigh less on on the Moon than on the Earth because . . .
a)
Moon has more mass, and therefore more gravity
b)
Moon has less mass, and therefore more gravity
c)
Moon has more mass, and therefore less gravity
d)
Moon has less mass and therefore less gravity
23.
Why can astronauts jump and float a little on the Moon?
a)
Because the Moon's gravity is NOT that STRONG.
b)
Because the Moon's gravity is VERY STRONG. 
24.
Which of the following is a unit of speed ?
a)
sec
b)
mi
c)
m/s
d)
min
25.
What is velocity?
a)
the quickness of an object
b)
the location of an object
c)
acceleration
d)
speed in a specific direction
26.
65mi/hr South is an example of...
a)
Speed
b)
Velocity
c)
Acceleration
d)
Direction
27.

An old lady rolls down a hill at 3 meters/second. The hill is 36 meters long. How many seconds does it take the old lady to reach the bottom of the hill?

a)

39 seconds

b)

12 seconds

c)

15 seconds

d)

33 seconds

28.

Fonzie flies through the air 24 meters on water skis wearing a leather jacket with swimming trunks over the shark. It takes him 2 seconds to make the jump. How fast was Fonzie flying through the air on water skis in a leather jacket and swimming trunks?

a)

8 m/sec

b)

12 m/sec

c)

22 m/sec

d)

26 m/sec

29.

What is this simple machine?

a)

Wedge

b)

Inclined plane

c)

Lever

d)

Screw

30.

What is this simple machine

a)

Wedge

b)

Inclined plane

c)

Lever

d)

Screw

31.

This simple machine ______________

a)

cuts

b)

holds things together

c)

moves heavy objects

d)

changes the direction of a force

32.

Simple machines help you make work __________.

a)

easier

b)

more difficult

c)

interesting

d)

wonderful

33.

This simple machine helps you to move heavy things across distance.

a)

lever

b)

wheel and axle

c)

pulley

d)

screw

e)

inclined plane

34.

This simple machine cuts things.

a)

lever

b)

wheel and axle

c)

wedge

d)

screw

e)

inclined plane

35.

An astronaut, while exploring the Moon's surface, picks up a peculiar book. Using a spring scale calibrated for lunar gravity (where the acceleration due to gravity, g, is approximately 1.62 m/s²), they measure the book's weight to be 2 Newtons. Given the Moon's gravity, what is the mass of this intriguing lunar book?

4 lines
36.

A family is planning a road trip from their hometown to a coastal city 150 kilometers away. They aim to cover the distance in 2 hours to make the most of their day at the beach. At what average speed must they travel to reach their destination on time?

(a)  

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