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RMSA Waves and Space Technology 2023

Total questions: 43

Worksheet time: 31mins

Name
Class
Date
1.
An analog signal is sent in Discrete pulses in two states, on= 1 or off= 0.
a)
True
b)
False
2.

A big advantages of digital technology is the recording takes up less storage space on a device and can be stored for a longer period of time.

a)
True
b)
False
3.
Why are digital signals more reliable in transmitting information than analog signals? 
a)
They are more powerful
b)
They carry less information
c)
They have less interference over long distances
d)
They have more interference over long distances
4.
What is true about a digital signal?
a)
They are easily distorted or affected by interference
b)
They take up more space
c)

They are higher resolution

d)
They are generally considered more reliable
5.

This is a signal where the data is represented by binary digits.

a)

Digital

b)

Analog

c)

NTSC

d)

CRT

6.

This is a signal that fluctuates exactly like the original signal with higher resolution.

a)

Analog

b)

Digital

c)

High Definition

d)

Binary

7.
Smooth and continuous data
a)
analog
b)
digital
c)
pulse
d)
binary
8.
This is how analog signal looks like.
a)
True
b)
False
9.

Which of the following is an advantage of analog signals

a)

Less prone to interference

b)

Requires less power

c)

Travels Farther

d)

Can carry more detailed information

10.

What type of electromagnetic wave has a higher frequency than visible light and a larger wavelength than x-rays

a)

Infrared

b)

Gamma

c)

visible

d)

Ultraviolet

11.

What type of wave has the smallest wavelength and the highest frequency on the electromagnetic spectrum?

a)

Radio

b)

Micro

c)

Gamma

d)

X ray

12.

Which electromagnetic waves are useful for Television?

a)

Gamma

b)

x ray

c)

radio

d)

microwave

13.

Why is the Hubble telescope located in space rather than on the surface of earth?

a)
So it can be closer to the stars it magnifies
b)
They have very large optical lenses
c)
So its images arent distorted by Earth's atmosphere 
d)
So it can be operated by astronauts 
14.

NASA wants to explore the surface features of Mars,

What’s the best space technology to send to the planet?

a)

Telescope

b)

Space Rover

c)

Probe

d)

Satellite

15.

Which type space technology flies by a planetary object, gathering data and images as it passes by the celestial object.

a)

Fly-By/ Space Probe

b)

Telescope

c)

Satellite

d)

Rover

16.

Unmanned space technology needs to send data back to earth for scientists to analyze. Which types of wave signals are sent between the technology and Earth for communication.

a)

electromagnetic waves

b)

sound waves

c)

gravitational energy

d)

seismic waves

17.
Space observatories are used to:
a)
Collect data
b)
Take pictures
c)
All answers
d)
Transmit information
18.
Unmanned space probes are used to explore outer space because: 
a)

They are better at finding alien technology.

b)
They are extremely large
c)
It's too dangerous for humans
d)
It's too hard to see things far away
19.

Which is the following is NOT a requirement for the classification of dwarf planets?

a)

have not cleared their orbit of other objects

b)

spherically shaped

c)

orbit the Sun

d)

made of ice

20.

Triton is a large, natural body of matter that revolves around Neptune. The classification used to describe Triton is __________.

a)

Star

b)

Comet

c)

Meteor

d)

Moon

21.

What is wrong with the picture of the solar system.

a)

The planets should have been much FARTHER apart from each other.

b)

The planets are NOT colorful. They are white.

c)

We DON’T know exactly what the planets look like

d)

Planets are oval and NOT round.

22.

The FARTHER away from the Sun …

a)

the CLOSER together the planets are to one another.

b)

the FARTHER apart the planets are from one another.

c)

SOME planets are close, OTHERS are farther apart.

d)

NONE of the above.

23.
The Asteroid belt separates which two planets
a)
Mars and Jupiter
b)
Mars and Saturn
c)
Earth and Mars
d)
Jupiter and Saturn
24.
Which definition accurately describes the Astronomical Unit (AU)?
a)
The average distance between the planets. 
b)
The average distance between Earth and Mars.
c)
The average distance between the Earth and the Sun. 
d)
The average size of the Earth compared to the Sun. 
25.
How do the sizes of the inner planets compare to the sizes of the outer planets?
a)
The inner planets are larger.
b)
The outer planets are smaller.
c)
There is no size difference between the inner and outer planets.
d)
The inner planets are smaller.
26.
Describe how the distances between the orbits of the inner planets compare to the distances between the orbits of the outer planets.
a)
The distances between orbits of the outer planets are much smaller.
b)
The distances between orbits of the outer planets are much larger.
c)
The distances between orbits of the inner planets are much larger.
d)
There is no difference between the distances of the orbits of the inner planets and the outer planets.
27.
True or False
The planets are all equally distanced from each other.
a)
True
b)
False
28.

Why do scientists use scale to study the Solar System?

a)

The solar system is too large to study without using scale models

b)

The solar system is too small to study without using scale models

c)

Scientists don't need to use scale because we have satellites

d)

All of the above

29.

Why is making a model of the solar system difficult?

a)

Don't have the right materials

b)

The solar system is so big and the objects in it are so small in comparison

c)

There are too many parts in a model

d)

Because the science concepts are too difficult

30.

Which of the following list the correct hierarchy in the Universe from biggest to smallest?

a)

Universe, galaxies, solar system, stars and planets

b)

Planets, stars, solar system, galaxies, universe

c)

Solar system, galaxies, stars, planets, universe

d)

Universe, solar system, galaxies, planets and stars

31.

Comet Hartley was first spotted in 1986 at Siding Spring Observatory in Australia. It is a small, peanut-shaped comet about 1.6 kilometers across that takes about 6.5 years to orbit the sun. It last passed by in 2017, and the time before, in 2010. In what year will it be visible next?

a)

2030

b)

2023

c)

2026

d)

2075

32.

The strongest parts of the magnet are ...

a)

fronts

b)

backs

c)

poles

d)

middle

33.

What would happen if a north pole of a magnet came close to a north pole of another magnet?

a)

they would be attracted to each other

b)

they would be repelled from each other

34.
The picture is an example of an:
a)
Electric circuit
b)
Electromagnet
c)
Electric nail
d)
Electric power cell
35.
Electric current flowing through a wire produces
a)
static electricity
b)
an open circuit
c)
a permanent magnet
d)
a magnetic field
36.

Which one represents the magnetic field lines of magnets repelling?

a)

A

b)

B

37.

What happens to the strength of a magnetic field as you move away from the magnet?

a)

The strength of the magnetic field increases.

b)

The strength of the magnetic field doesn't change.

c)

The strength of the magnetic field is doubled.

d)

The strength of the magnetic field decreases.

38.
How do you make an electromagnet stronger?
a)
Add a motor and/or lightbulbs
b)
Add more light bulbs and/or wire coils
c)
add more wire coils and/or a switch
d)

add more wire coils and/or more voltage to the battery

39.
This substance is
a)
magnetized
b)
unmagnetized
c)
positively charged
d)
negatively charged
40.

Where can an electric field be found?

a)

below a force field

b)

in a gravitational field

c)

in the space surrounding a charged object

d)

outside of a magnetic field

41.

Which electromagnet will pick up LESS paper clips?

a)

A

b)

B

42.

Which electromagnet will pick up MORE paperclips?

a)

A

b)

B

43.

Electromagnetic technology is used in many different ways today. Which of these are uses of this technology?

a)

high-speed trains

b)

electric generators

c)

MRI Machines

d)

all of these

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