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WorksheetsScience 7 Module 6 Exam Practice (for Retake)
Total questions: 20
Worksheet time: 14mins
_____________ light results from a combination of all the wavelengths of visible light
Red light
White light
Violet light
Black light
List the forms of visible light from longest to shortest wavelengths.
violet, red, orange, yellow, green, blue, indigo,
Violet, indigo, blue, green, yellow, orange, red
red, orange, yellow, blue, green, indigo, violet
Red, orange, yellow, green, blue, indigo, violet
Which part of the electromagnetic spectrum can humans see with the naked eye?
List the forms of electromagnetic waves from longest wavelength to shortest wavelength.
What is the relationship between wavelength and energy?
Shorter wavelength, higher energy
Which ray is refracted?
Ray 1
Ray 3
Ray 2
None of the rays
The speed of light will be greater is a material with the ________________ density
greatest
least
Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. She placed a ray box in front of a mirror. She changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. What is the indipendent variable?
Angle at which the light from the ray box strikes the mirror
Angle at which the mirror reflects the light from the ray box
The ray box used as the source of light
Alice did an experiment to find the relationship between the angle at which a ray of light strikes a mirror and the angle at which the mirror reflects the light. She placed a ray box in front of a mirror. She changed the angle at which the light from the ray box struck the mirror and noted the corresponding angle at which the mirror reflected the light. What is the dependent variable?
Angle at which the light from the ray box strikes the mirror
Angle at which the mirror reflects the light from the ray box
The ray box used as the source of light
What happens when water vapor cools?
It condenses into liquid water
What happens when When water loses heat?
When a liquid gains heat?
The temperature of the liquid increases and it changes into a gas
The liquid condenses
An unknown substance is heated from 10 °C to 25 °C. The table below shows the state of the substance at different temperatures. Which statement is correct about the unknown substance?
Its melting point is 17 °C.
Its melting point is 15 °C.
The substance sublimes at 15 °C.
The substance exists as a gas at 17 °C.
Which statement is correct?
The temperature of the water in both beakers is lower than 8 °C.
The temperature of the water in both beakers is greater than 8 °C.
The temperature of the water in both beakers will decrease.
The temperature of the metal spheres in both beakers will increase.
A piece of copper at 10 °C is dropped into a glass of water at 35 °C. Which statement is correct?
Heat will flow from the copper to the water in the glass until both reach the same temperature.
The final temperature of the water in the glass and the copper will be 10 °C.
Heat will flow from the water in the glass to the copper until both reach the same temperature.
The final temperature of the water in the glass and the copper will be 35 °C.
Which term is used to describe all the habitats around the world?
Ecosystem diversity
Genetic diversity
Natural selection
Species diversity
It has been reported that the DNA of the elephant shark has barely changed over the last 420 million years. Which statement explains why the elephant shark has not changed over time?
Many variations existed in the species.
Several mutations took place in the species.
Their environment remained fairly constant over time.
They were exposed to severe competition for food and a mate.
Polar bears give birth and hunt on sea ice. Which of the following would help polar bears survive during the melting of Arctic ice?
Growing another layer of fur during summer
Migrate inland to search for different food sources
Staying put until the ice refreezes
Sticking to the usual diet of seals
The table below shows the rate at which four different species can adapt to changes in temperature. Which species is most likely to become extinct due to global warming?
Species A
Species B
Species C
Species D
Which of the following waves have the lowest energy?
Gamma waves
Radio waves
Visible light
X-rays
