What is Physics? 10-1

Which of the following things that we don't study in physics?

• How the sun moves across the sky

• How the lungs work

• Why objects fall downward

• How remote controls turn on electronic devices

In which spectrum of radiation is this photo taken?

• X-ray

• gamma ray

• infrared

• microwave

A boy opens a door as shown in the figure. Which force doesn't/ don't cause the door to open?

• F1

• F2

• F1 and F2

• F1 and F3

Who is this famous scientist?

• Wilhelm Röntgen

• Galileo Galilei

• Isaac Newton

• Albert Einstein

Which of the following units is not named after a scientist?

• Joule

• Newton

• Ohm

• Heisenberg

You have to measure a pencil as shown in the figure. In which direction do you see to get a correct measurement?

• A

• B

• C

How do we measure the depth of the sea?

• By direct measurement using a ruler

• By indirect measurement using sound wave

Which of the following is not the unit of time?

• day

• second

• third

• month

Which of the following is not the unit of length?

• meter

• second

• light year

• parsec

If three apples cost Rp15,000, how much do five apples cost?

• Rp25,000

• Rp5,000

• Rp50,000

• Rp100,000