3CI4.2 Science Unit 5 Light

What is the main purpose of the shadow length investigation?

• To measure the brightness of the Sun
• To explore how shadows change due to Earth's spinning
• To determine the height of the stick
• To observe the color of shadows

What tool is used to measure the length of shadows in the investigation?

• A thermometer
• A ruler
• A stopwatch
• A flashlight

At what time of day are shadows typically the shortest?

• Early morning
• Midday
• Late afternoon
• Evening

What causes the length of a shadow to change throughout the day?

• The Sun’s brightness
• The position of the Sun in the sky
• The color of the object casting the shadow
• The temperature of the air

What did Aleisha and her friends use to record shadow lengths?

• A digital camera
• A piece of paper with a stick
• A telescope
• A thermometer

What pattern did Aleisha likely notice about shadow lengths during the day?

• Shadows are longest at midday
• Shadows are shortest in the morning
• Shadows are longest in the morning and evening
• Shadows do not change length

What causes day and night on Earth?

• The Sun moving around the Earth
• The Earth spinning on its axis
• The Moon blocking the Sun
• The Earth orbiting the Sun

How long does it take for the Earth to complete one full rotation on its axis?

• 12 hours
• 24 hours
• 365 days
• 10 hours

What is the Earth’s axis?

• The path it takes around the Sun
• An imaginary line through its center from pole to pole
• The direction it faces the Moon
• The line connecting it to the Sun

In the model of day and night, what does the flashlight represent?

• The Moon
• The Earth
• The Sun
• A star