# Second Quarter PRE-TEST IN SCIENCE 10

## Quiz by Rodelio Manuel

Science

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30 questions
• Q1

Which electromagnetic wave has the highest energy?

Gamma rays

Ultra violetwave

Visible light

45s
• Q2

What happens to the frequency and wavelength if the energy of the wave decreases?

wavelength decreases, frequency increases

wavelength increases, frequency decreases

wavelength decreases, frequency decreases

wavelength increases, frequency increases

45s
• Q3

Radio waves, X-ray waves, and microwaves are detected to betravelling in a vacuum. If the waves have a wavelength of 2 x 103 m, 2 x 10-9m, 2 x 10-1 m respectively, which of the three travels the fastest?

X-ray waves

They all travel at the same speed.

microwaves

45s
• Q4

An FM radio station broadcasts at 9.05 MHz (9.05 x 107 Hz).The radio wave travels at the speed of light, what is its wavelength?

2.72 x 1016 m

3.31m

0.04m

2.72 x1010 m

45s
• Q5

A gamma ray with a frequency of 6.2 x 1019Hz is fired on an unknown object in space. The value of Planck’s constant is 6.626 x 10-34Js. How much energy does the wave carry?

4.11x 10-14 J

4.11x 10-14 J·s

4.11x 1014 J·s

4.11x 1014 J

45s
• Q6

What will happen if the antenna of the analog television is placed inside the house?

Pictures are clear, but the sound is intermittent due to its enclosed location

Pictures are blurred, but the sound is good due to the transmitter’s location

Pictures and sound transmitted are strong due to its enclosed location.

Pictures and sound transmitted are weak due to the location of the transmitter

45s
• Q7

Which is NOT included in the group for radio communication?

Amplifier

Oscillator

Antennas

WIFI Router

30s
• Q8

Which causes sugar, water, and fat to vibrate at extremely high frequencies?

Kinetic energy

Cavity magnetron

Microwave energy

30s
• Q9

Which item must NOT be placed inside the microwave oven?

Foil

Styrofoam

Pyrex cup

Hard-boiled eggs

30s
• Q10

Which is the center of transmitting and receiving radio waves towards television and radio communication?

Wires

Speakers

LCD’s

Base Station Antenna

30s
• Q11

What form of electromagnetic radiation has the most energy?

Gamma-rays

Microwaves

30s
• Q12

Which is NOT a probable result of the human tissue’s exposure to ionizing radiation?

Death

Cellular damage

Cancer

Viral infection

30s
• Q13

What does ionizing radiation remove from atoms?

Neutrons

Protons

Nucleus

Electrons

30s
• Q14

What is the difference between ionizing and non-ionizing radiation?

Ionizing radiation is a naturally occurring phenomenon and non-ionizing radiation is only created artificially.

Non-ionizing radiation is a naturally occurring phenomenon and ionizing radiation is only created artificially.

Ionizing radiation has high energy that can remove an electron from the atom, but non-ionizing does not.

60s
• Q15

How can we protect ourselves from harmful electromagnetic radiation?

Spend time outdoors

Limit sun exposure