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Energy & Machines/Gravity & Space

Total questions: 63

Worksheet time: 59mins

Name
Class
Date
1.
Which object requires only mechanical energy to perform its main function?
a)
A
b)
B
c)
C
d)
D
2.
Water flows through turbines in dams like the one shown below. The flowing water makes the turbines spin. What type of energy is used to make the turbines spin in this type of dam?
a)
Light energy
b)
Thermal energy
c)
Sound energy
d)
Mechanical energy
3.
Three different objects that use the same source of energy are shown. What is the energy source for these objects?
a)
Light energy
b)
Mechanical energy
c)
Sound energy
d)
Electrical energy
4.
Is this a heat, light, or sound source?
a)
Sound
b)
Heat 
c)
Light
5.

1.The ability to do work is:

a)

a.Lazy

b)

b.Crazy

c)

c.Energy

6.

6. Batteries have what kind of energy?

a)

a. Chemical

b)

b. Electrical

c)

c. Sound

7.

11. The food that we eat contains ________________ energy.

a)

a. Chemical

b)

b. Electrical

c)

c. Magnetic

8.

12. Energy that enables us to either communicate or hear each other.

a)

a. Light Energy

b)

b. Heat Energy

c)

c. Sound Energy

9.

19. Solar panels work by using ____________ energy.

a)

a. Sun

b)

b. Wind

c)

c. Water

10.

20. The energy that we use to cook food: _____

a)

a. Sound

b)

b. Heat

c)

c. Gravitational

11.

What type of energy is electrons flowing through a wire?

a)

Electrical energy

b)

Chemical energy

c)

Kinetic energy

d)

Mechanical energy

12.

The lamp gives off both light and heat energy

a)

True

b)

False

13.

A bicycle, car, blender, rocking chair, tooth brush, and a ceiling fan all have or use thermal energy.

a)

True

b)

False

14.

What forms of energy are given off by a lit lightbulb?

a)

A light bulb give off both light and thermal energy

b)

Mechanical energy is the only form of energy needed.

15.
Energy that can be detected by sight
a)
Light Energy
b)
Sound Energy
c)
Mechanical
16.
What forms of energy are important to have present when watching television?
a)
sound, thermal, and light
b)
electrical and sound
c)
electrical, light, and sound
d)
thermal and light
17.
Which is not a type of simple machine?
a)
spring
b)
screw
c)
pulley
d)
wedge
18.
work is...
a)
energy from the sun
b)
a type of machine
c)
a force that moves an object
d)
a force that pulls you toward the earh
19.
What type of simple machine is found on the cap of a pickle jar?
a)
lever
b)
inclined plane
c)
pulley
d)
screw
20.
Which of these is not an example of an inclined plane?
a)
ladder
b)
stairs
c)
wall
d)
driveway
21.
Jan is using a screwdriver, which is a type of ...
a)
a pulley
b)
a screw
c)
a lever
d)
a wheel and axle
22.
Which is a characteristic of a simple machine?
a)
They run on electricity.
b)
They take a long time to make.
c)
They have few or no moving parts.
d)
They are not very large.
23.
Which type of simple machine would be found on the bottom of a wagon??
a)
a pulley
b)
a screw
c)
a wedge
d)
a wheel and axle
24.
What kind of work is made easier by the wheels of this object?
a)
pushing a heavy load
b)
lifting a heavy load
c)
dividing a heavy load
d)
holding a small load
25.
A machine with few or no moving parts is called a ______.
a)
machine
b)
compound machine
c)
simple machine
d)
work
26.
Which is an example of a lever?
a)
seesaw
b)
skates
27.
Which is an example of a lever?
a)
bucket
b)
scissors
28.
Which is an example of a lever?
a)
car jack
b)
pulley
29.
Which is an example of a lever?
a)
crane
b)
truck
30.
Which is an example of motion?
a)
up and down
b)
friction
31.
A lever is a stiff bar that rests on a support called a fulcrum.
a)
True
b)
False
32.
A pulley is a wheel with a rod, called an axle, through its center lifts or moves loads.
a)
True
b)
False
33.

Amy uses 20N of force to push a lawn mower 10 meters. How much work does she do?

(a)  

34.

How much work does an elephant do while moving a circus wagon 20 meters with a pulling force of 200N?

(a)  

35.

A 900N mountain climber scales a 100m cliff. How much work is done by the mountain climber?

(a)  

36.

Shawn uses 45N of force to stop the cart 1 meter from running his foot over. How much work does he do?

(a)  

37.

A horse performs 15000 joules of work pulling a wagon for 20 seconds. What is the horse's power?

(a)  

38.

If it takes 50 seconds and 10 Joules move some books, calculate how much power is required to complete this task.

(a)  

39.

It takes 5 seconds and 250 joules to move a full wagon across the street. How much power is needed?

(a)  

40.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
41.
Any object with mass has gravity.
a)
True
b)
Sometimes
c)
False
d)
Never
42.
As distance between two objects increase the pull of gravity 
a)
Increases
b)
Decreases
c)
Stays the same
43.
The force of gravity acting on an object is the object's ______.
a)
mass
b)
matter
c)
weight 
d)
friction 
44.
The amount of matter in an object is 
a)
pressure
b)
weight
c)
mass
d)
force
45.
Two factors effecting the magnitude of the force of gravity between 2 objects are...
a)
mass and distance 
b)
mass and matter
c)
distance and weight 
d)
weight and mass
46.
Gravity attracts all objects towards one another.
a)
False
b)
True
c)
It depends
47.
Without gravity we would________. 
a)
Float away
b)
Stay in the ground
c)
Nothing would happen.
d)
I don't know
48.
Are astronauts in space and close to Earth being pulled by it?
a)
Yes, that's why they float (but they're actually falling)
b)
No, they don't feel Earth's gravity.
49.
What is an astronomical unit?
a)
distance between the moon and earth
b)
distance between the earth and pluto
c)
distance between the earth and sun
d)
distance between NJ and Cali
50.
Which statement best describes a galaxy?
a)
a cluster of millions of stars held together by gravity
b)
a star, with planets, moons and other small space bodies revolving around it
c)
all known objects
d)
all of the above
51.
Which movement creates day/night?
a)
rotation
b)
revolution
52.
Which movement creates years?
a)
rotation
b)
revolution
53.
Which planets are terrestrial planets
a)
Inner planets
b)
Outer planets
c)
Both
d)
Asteroid belt
54.
The Sun is at the center of our solar system.  All the planets in the solar system orbit around the Sun. Which of the following planets has the longest orbit? 
a)
Mercury
b)
Earth
c)
Saturn
d)
Neptune
55.
Which planet is the hottest?
a)
Earth
b)
Neptune
c)
Mercury
d)
Venus
56.
What is the only planet known to contain life?
a)
Mars
b)
Earth
c)
Neptune
d)
Uranus
57.
What characteristics do Earth and Venus share? 
a)
They rotate in the same direction
b)
They are both similar size and density
c)
They have the same gases in their atmospheres
d)
They were born at the same time
58.

what is it ?

a)

Earth

b)

Neptune

c)

Mercury

59.

WHAT IS IT ?

a)

MERCURY

b)

SATURN

c)

JUPITER

60.

WHAT IS IT ?

a)

MERCURY

b)

PLANET

c)

SOLAR SYSTEM

61.

WHAT IS IT ?

a)

UNIVERSE

b)

NEPTUNE

c)

JUPITER

62.

MERCURY IS THE SMALLEST PLANET IN OUR SOLAR SYSTEM

a)

TRUE

b)

FALSE

63.

NEPTUNE IS THE NEAREST PLANET TO THE SUN

a)

FALSE

b)

TRUE

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